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= July 17 =


= December 13 =
== My SPI OLED Module has no CS pin ==


== Where can I find a thesis of recently released Gemini 2.0? ==
I tried to connect a 0.96" 128x64 monochrome OLED display to my Arduino Nano.


For , I find its ].
http://www.electrodragon.com/product/0-96-12864-oled-display-iicspi/


What about recently released ? ] (]) 21:53, 13 December 2024 (UTC)
They look like the ones on this page even though their backs are a little different.


:? &nbsp;--] 21:55, 14 December 2024 (UTC)
I purchased each of both types. The I2C OLED worked as advertised but the I2C/SPI one has some issues.
::OK That's Gemini 2.0 release information. ] (]) 16:52, 15 December 2024 (UTC)


= December 15 =
The OLED shown on the webpage has 7 pins while mine has only 6 pins. Mine has all the pins except for CS (Chip Select).


==Questions About New Laptop Computer==
My I2C/SPI module has soldering pads in its back that says "I2C" and "SPI" and the SPI pads are shortened by its manufacturer. Unless I desolder them, its I2C interface is disabled. It does not provide any clue regarding its I2C address. Either 0x78 or 0x7A, I guess. I'll probably never use its I2C mode.
My old laptop computer developed problems with the power, so that it wouldn't start when connected to regular line current. It would start when connected to high-amperage current in an electronics store, but that wasn't useful, and it was time to replace it after five years. I now have some questions about problems with a new laptop computer. The new laptop computer is an HP running Windows 11. ] (]) 04:43, 15 December 2024 (UTC)
===Cursor Jumping Randomly===
Sometimes when I am typing in a Word document or editing Misplaced Pages in a source window, I discover that the cursor isn't where I think it should be. The cursor has jumped to somewhere else on the screen, apparently randomly. I have to do a Ctrl-Z to undo what I typed in the wrong place, and then move the cursor back to where I want it. If this is caused by line noise, how do I minimize the impact? How likely is that a new mouse would resolve the problem? Are there any settings that I should diddle with?
] (]) 04:43, 15 December 2024 (UTC)


:First thing I would do is give the mouse and mousepad a good clean and disconnect and reconnect it. ]|] 09:14, 15 December 2024 (UTC)
My I2C module with an address of 0x78, has a 470k resistor soldered between the 0x78 bonding pads in is back side. This resistor can be detached and soldered on the 0x7A pads. It's painful to work on these itsy-bitsy SMT parts. But at least I can still manage to have two of them on the same I2C bus.
:Possibly due to your hand brushing the trackpad while typing. If you have a mouse, you could experiment with disabling the trackpad: . Or even just try turning it off while typing. This erratic ] jumping used to happen to me a lot, too, when my laptop was new, until I found the key to disable the trackpad.
:The term ''caret'' or ''insertion point'' is useful to exclude the mouse cursor (the pointer) from searches. ]&nbsp;] 12:54, 15 December 2024 (UTC)
::Thank you, ]. I disabled the touchpad. For users who always use a mouse, the touchpad is a complication. ] (]) 19:06, 15 December 2024 (UTC)
:::I now have a possibly useless question. The documentation referred to an option that disables the touchpad when there is a mouse, but the only option that I found in the settings is the option that always disables the touchpad. I would like to specify that the touchpad is disabled when there is a mouse, and enable it if there is no mouse. This makes very little difference because I will always use a mouse. Is it possible that that option isn't available on my computer? This isn't important. ] (]) 02:38, 17 December 2024 (UTC)
::::Possibly true, your system vendor might not have put any software on there to do that automatically. The general rule with computers is, you can make it do what you want, it's just a question of how much effort is involved in that. To do stuff automatically when hardware is (dis)connected, you have to set up something that subscribes to ] events: Windows's thing for letting all interested parties know "hey some new device just showed up". Here's an answer for how to run a script when a device is connected: , if you really want to put in the effort. Alternatively if you just want something quicker and simpler but not automatic, you can install ] (quite useful program) and set a shortcut key on the keyboard to disable/enable touchpad. --] (]) 19:11, 26 December 2024 (UTC)


===Network File Sharing===
Does it mean my I2C/SPI OLED module will always have its SS (select) line set at low?
With the old laptop, I had set up network file sharing, so that the laptop computer could view and edit files in shared folders on my desktop computer, a Dell, also running Windows 11, if they were both within range of my wireless router (and the desktop computer always is). The desktop computer could also access files in shared folders on the laptop, if the laptop was I have tried to set up network file sharing with the new laptop computer. I tried calling the technical support offered by the electronics chain that I bought the computers from, and I made seven calls to them, none of which worked, and I have concluded that their technical support people don't know what they are doing, and, worse, don't know the limits of their knowledge. Does anyone have advice on a book that will tell me how to set up network file sharing with Windows 11, that has neither too little nor too much information for a retired database engineer?
] (]) 04:43, 15 December 2024 (UTC)


:@] Did you try ? <span style="font-family:monospace; font-weight: bold"> <span style="color:ForestGreen;font-size:15px"> ]</span> (<span style="color:#324c80">she/they</span> {{pipe}} ]) </span> 20:21, 16 December 2024 (UTC)
Does it mean I can never use two of these I2C/SPI modules on the same SPI bus? -- ] (]) 03:13, 17 July 2016 (UTC)
::] - Thank you. That describes the basics, and describes what I had done successfully with the previous laptop computer. I need either a much greater level of detail, or a troubleshooting guide, or something like that. That was helpful in that it doesn't point out anything that I am doing wrong. ] (]) 02:31, 17 December 2024 (UTC)
:::Asking for clarification: you did all the steps in the section "How do I troubleshoot sharing files and folders" on that page, on the new laptop? After doing those steps, you still don't "see" your desktop in File Explorer on laptop? (Restart the laptop just in case.) ] (]) 04:24, 26 December 2024 (UTC)
:Check that all the computers are on the same network. See if all the IP addresses are different. See if the wifi has the network profile set to Private. See if file explorer shows it in Network, or \\newlaptopname . You may have to check file wall settings ] (]) 07:29, 26 December 2024 (UTC)


= December 19 =
: By the way, these OLED modules are not defective. They were custom made for their particular customers. That's why there are so many similar OLED modules on the market with similar but different circuit board designs. They were built for special purposes and unshipped productions went to the hobbyists. They are badly documented at best. Some of them have no documentation at all. -- ] (]) 04:07, 17 July 2016 (UTC)


==Scanning all available streams==
:: I daresay you can use GPIO pins on the Arduino as outgoing CS pins, and AND these (with external glue logic) to each display's drop of the I2C bus (which is effectively how chip-select would work if the displays themselves had a CS pin). In any event, the I2C address space is so small you can resort to bruteforcing to figure out what address a specific part has. -- ]'''··–·'''] 21:26, 17 July 2016 (UTC)


Hello there. I'm have a question: How to scan all available online streams from a specified server and port given? For example, I've found a Wowza Streaming Engine server at 115.79.46.164 and port 1935. I want to know which website or software can help me to find all active streams on this server. Thanks for reading. ] (]) 14:22, 16 December 2024 (UTC)
== Files that I have deleted and thrown in the Trash-can, only to empty the trash-can afterwards, is it possible to recover those files ? ==


: ] -- ]'''··–·'''] 17:02, 16 December 2024 (UTC)
Files that I have deleted and thrown in the Trash-can, only to empty the trash-can afterwards, is it possible to recover those files ? If so, how ? Tell me step by step if you're willing.
:nmap is just going to let you toss packets to the server and inspect the packets that server decides to send you back in reply. Which is great for networking analysis, but we want to speak ] here and talk with the "streaming" software on the remote host. Does help at all? (You will need ] if not already installed.) Do take note, the party which owns the server could always have configured it to restrict the information it will give out to the public. --] (]) 19:32, 26 December 2024 (UTC)


== .kp domains ==
Thank you. ] (]) 06:51, 17 July 2016 (UTC)


How many .kp domains are there? ] (]) 13:10, 19 December 2024 (UTC)
:The first place to look is on your backup media, but if that is somehow not available then you might like to try something from our ]. Before you do anything else, stop saving any files to the drive from which the files have been deleted because these might overwrite the space where your deleted files were stored. There is no guarantee that the deleted files will still be there, but and ]. ] 08:02, 17 July 2016 (UTC)
:Did you see ]? ] (]) 19:10, 19 December 2024 (UTC)
:https://www.northkoreatech.org/the-north-korean-website-list/ is a bit outdated but has more background info. ] (]) 19:20, 19 December 2024 (UTC)
::It's ok, bro. I can still view the outdated ones with the Wayback Machine at the Internet Archive. Thanks, ] (]) 16:10, 20 December 2024 (UTC)


::Note that ''stop saving any files'' implies ''stop using any application that tacitly saves files''; for example, your browser saves history and cache... —] (]) 07:01, 20 July 2016 (UTC)


Thank you ] (]) 12:15, 17 July 2016 (UTC)


= December 24 =
::It depends how badly you want the data back. For critical data, there are professional data recovery services but they are not cheap. Much more expensive than the cost of a backup disk. If you do want to go down that route, stop using the computer immediately. ] (]) 00:39, 18 July 2016 (UTC)


== Is this bug in the google search ? ==
== Binary Calculation ==


I searched for the keywords: "Israel Folau" "Margaret Court" "David Tyree", then Google shows me . Is this bug?] (]) 22:35, 24 December 2024 (UTC)
While doing binary calculation such as : 11001+110*101011 Can we use BODMAS rule here or not? <!-- Template:Unsigned --><small><span class="autosigned">—&nbsp;Preceding ] comment added by ] (] • ]) 13:57, 17 July 2016 (UTC)</span></small> <!--Autosigned by SineBot-->
:If I do the same search, this question shows up (twice, due to how the refdesk is organized) plus a link to Stuff. So, it doesn't seem to be a bug. I tried the same format search with much more famous people and got hundreds of links. ] (]) 13:20, 25 December 2024 (UTC)
::Remember that Google has numerous servers that can respond to your search, and they do not necessarily all behave the same. --] (]) 22:17, 27 December 2024 (UTC)


:In the absence of any indication of a left-to-right convention, one would assume that algebraic ] (BODMAS) is appropriate. For clarity, brackets (parentheses) should be shown when the calculation is not obviously algebraic. ] 15:54, 17 July 2016 (UTC)


= December 28 =
:In mathematics, the normal order of operations always applies when arithmetic operators are applied to numbers. It doesn't matter how the numbers are written (decimal, binary, hex, or ] for that matter). However this is the computing reference desk. If you're asking whether the order of operations applies in some particular programming language, you'll need to specify which language you're using. Almost all programming languages use the BODMAS rule too, although there are exceptions like ] and ]. ] (]) 16:26, 17 July 2016 (UTC)
::It doesn't even matter if + and * are actual addition and multiplication rather than, say, bitwise OR and bitwise AND (I don't know enough math but I'm sure deep down + and OR and similarly * and AND, are one and the same operation, or are special instances of some third operation. It isn't called "sum of products" and "product of sums" for nothing!) ] (]) 23:32, 17 July 2016 (UTC)

== Current existence of InterNIC ==

Does anyone know about ]? Please go to the discussion at ] --] (]) 17:48, 17 July 2016 (UTC)

:The ] that formerly operated under the name "InterNIC" is now operated by ]. It probably lives in a giant data center in ], with the rest of Verisign's (]) internet backbone hardware.
:I doubt that very much of the server infrastructure has been physically located at 333 Ravenswood Avenue since the 1980s, so this transition was probably mostly an administrative transfer. One could probably make the case that the ] are, ''de facto,'' the new root-level arbiters, anyway, so it's ''almost'' moot to discuss who controls the root name servers and routing tables. As far as InterNIC itself, it always was, and still remains, a ] (not an organization). The mark is assigned to the ] (a part of the United States Government) and is administered by ], which is a special organization that still exists and has special operational involvement with the basic technology and policy infrastructure that most people call "The" Internet. ] (]) 20:28, 17 July 2016 (UTC)

::Nitpick: as the article says, most of the root "servers" are actually a bunch of servers spread around the globe using ]. --] (]) 06:04, 18 July 2016 (UTC)
:::Thank you, ], for your perfectly correct observation. The technical implementation of the domain name resolution system has become quite a bit more complicated nowadays compared to the "vanilla" description in textbooks and the original RFCs. I trust that our technically-apt enthusiast readers can dive deeper into those details. Appropriate starting points for anyone new to the topic are our articles on the ], the ], and new users just need to be aware that this technology is very complex and has evolved considerably over the decades.
:::] (]) 15:34, 18 July 2016 (UTC)

Thanks all of you! Can I say that the organization ceased to exist in 1998? I'm adding the article to ].--] (]) 16:19, 20 July 2016 (UTC)

= July 18 =
== Another ] Problem, kindly help ==
It has just two or three, or may be one more grounded terminal (for negative ] output) but several positive terminals, so many that they need numbers to be told apart. But the project I'm working on needs only one positive output (for a certain anode in the project) and lots of, literally dozens of negatives, for cathodes that had to be fed negative DC. Of course, I can't feed all the cathodes from a single Arduino source, since the whole meaning of using the programmable micro-controller is to provide different cathodes at different times. Any solution, please ? ] (]) 00:28, 18 July 2016 (UTC)
:you tie the anode to Vcc and each of the cathodes (is this a common-anode 7-segment?) to an I/O pin (through a series resistor.) Then pull the pin ''low'' to light the segment and ''high'' to make it go out. ] (]) 08:17, 18 July 2016 (UTC)
:you can use a single current-limiting resistor at the anode if you make sure only one segment is lit at any instant (multiplexing.) ] (]) 08:19, 18 July 2016 (UTC)
::The OP might also want to consider an ] ] (such as a 7406) between the Arduino output and the load - driving the LEDs (assuming that's what the load is) directly off the outputs may not work if the outputs can't sink enough current. There are dedicated 7-segment display drivers (such as the 7447) that the OP might want to consider as well. ] (]) 18:56, 18 July 2016 (UTC)
:::There are many approaches. The general concepts you need to wrap your head around here is ] and current sink. This might also be a perfect opportunity to use and learn about ]. You can buy a handful of little BC338 for literally a few bucks and learn how to use them to source or sink current. ] (]) 00:35, 19 July 2016 (UTC)

== On some pages about Head Mounted Displays, you see a list of games suported by some brand of HMD, what does this mean? ==

On some pages about Head Mounted Displays, you see a list of games suported by some brand of HMD, what does this mean? Can't we just open a game while using HMD?] (]) 01:36, 18 July 2016 (UTC)

:Assuming the general technology hasn't changed much... I used to work on device drivers for an HMD. I also made sure that the HMD worked with whatever version of Doom was released at the time to show it as a compatible game. While you can display the video of any game inside the helmet, translating the movement of the helmet to controls inside the game is not always seamless. So, it is probable that the list of supported games are those that work as expected. Other games might not work as expected. For example, you turn you head, but it doesn't register as a turn in the game. ] (]) 12:06, 18 July 2016 (UTC)
::''While you can display the video of any game inside the helmet,'' I own a ] and you can't just display the video of any game inside the HMD, there isn't a native "mirror monitor mode". To mirror your desktop into the HMD you need to buy some extra software. I've bought it and it's cheap but personally I think it's a but of an oversight that there isn't a native mode that supports monitor mirroring. ] (]) 00:16, 19 July 2016 (UTC)

== Artifacts of apps ==

Does installing and uninstalling apps on a smartphone affect the phone's memory? In other words, when an app is uninstalled, does the available memory go back to what it was before it was installed (assuming no other changes, of course)? Or are little artifacts of the app left in the memory permanently, like little bits of debris? <font face="Century Gothic">&nbsp;&nbsp;&nbsp;→&nbsp;]&nbsp;]&nbsp;]&nbsp;]</font> 14:42, 18 July 2016 (UTC)
:It probably depends on OS. ]_] 20:35, 18 July 2016 (UTC)
::And obviously depends on the app. If you are talking strictly about the "app" it self, then theoretically the app "model" is supposed to keep the app like a "self contained" little bubble. The app is not supposed to "interfere" with other parts of the phone except through ]s. Removing the APP should be quite clean, (cleaner than a PC anyway). However any application CAN write things to your storage, for example a camera app can save photos to your photo roll. Those photos might remain after you delete the camera app, that's just an example, there's all sorts of data an app can write out which you might not be able to guarantee is removed when you delete the app. ] (]) 00:12, 19 July 2016 (UTC)
:::Aha! Thank you. So that explains why when you go to the delete screen there are two buttons, "Clear Data" and "Delete App". (For the record, I always clear the data before deleting.) Thanks again. <font face="Century Gothic">&nbsp;&nbsp;&nbsp;→&nbsp;]&nbsp;]&nbsp;]&nbsp;]</font> 12:13, 21 July 2016 (UTC)

== Availability of security updates for Windows 7 ==

Has Microsoft stated for how long security updates will continue to be available for Windows 7? Thanks. --] (]) 22:55, 18 July 2016 (UTC)

:A Web search for your question gives as the first result. --] (]) 03:44, 19 July 2016 (UTC)

= July 19 =

== Can Ipad Pro 12.9" watch netflix? ==

I wanted to buy a ] to watch netflix but when I looked into the wiki article about ipad it did not mention whether ipad pro 12.9" can watch netflix. I rather not spend $969 just to find out that it cannot watch netflix. Has anyone managed to watch netflix on it yet? ] (]) 00:43, 19 July 2016 (UTC)

:Any ] device, including the iPad, should be able to watch ] streams using the Netflix app. iOS is a platform officially supported by Netflix. (You need a Netflix account of course.) --] (]) 03:43, 19 July 2016 (UTC)

::I see. But can I watch Netflix using the split screen function where I can watch Netflix on one half of the screen while playing Pokemon Go on the other half of the screen? ] (]) 06:43, 19 July 2016 (UTC)
:::Netflix is definitely , including iPad Pro. It works perfectly well in full-screen mode, and the Netflix software app has limited support for ''some'' of the newest iOS multitasking features.
:::Presently, (as of Netflix 8.9.1 (9)) for iOS, split screen is not supported by Netflix's software application. The iPad Pro hardware is powerful enough to smoothly display other video applications in split-screen or in Picture-in-Picture mode, and you can multitask (including using the camera or playing Pokemon Go) while watching videos from other apps (including web-based videos in Safari). Here's official documentation: .
:::But Netflix will pause video playback when you enable any multitasking features. As far as I am aware, Netflix requires full-screen playback on all other competitive mobile platforms, too. (I really suspect this mandate for full-screen-only playback is a bizarre artifact of their content license agreements, but I have little actual evidence to support that suspicion).
:::Perhaps in the long term, Netflix will make software changes to permit split-screen multitasking. If you are a Netflix subscriber, you can provide feedback to Netflix's customer support team to politely ask them to expedite this feature, .
:::For now, when I need to watch Netflix while playing Pokemon Go, I have to use two iPad Pros, which can be a bit of a handful.
:::] (]) 13:02, 19 July 2016 (UTC)

== Folders in Eclipse ==

Hi, I have a lot of Java projects in Eclipse, and I want to organize them into categories, using "folders" (maybe there's other name for this in Eclipse?). For example, in one folder I'll put Java projects that I've created for homework, in other folder I'll put Java projects that I've created just for fun, etc. How to create such folders in Eclipse? Thanks in advance!] (]) 07:10, 19 July 2016 (UTC)

:In project view, right click > New > Folder.] (]) 23:39, 21 July 2016 (UTC)

== Development environment for remote text-only linux system ==

I have custom software that runs on a remote linux-based system without X windows enabled. Most of the time when I am doing development I mirror the software on a local machine and use a natural development environment for whatever I am working on. However, it isn't always practical to run everything locally. So sometimes I end up either repeatedly A) editing locally, saving, copying to the remote machine, then running, or B) editing on the remote machine using a basic text editor. Either approach works, but isn't wonderful. In the first case, I have extra steps copying over files constantly and in the second case I'm stuck with a basic editor without syntax highlighting or other helpful aids. What are some tools to make this easier? I'm thinking an editor that allows files to be opened and saved directly over SFTP might just be a good start. I'm supporting three different programming languages right now, so something more general would probably be best (perhaps with plugins that aid specific languages). ] (]) 13:19, 19 July 2016 (UTC)

:Just to throw out some options you might not have already covered:
:*] permits session persistence and terminal multi-tasking (on the remote server). It is ''incredibly'' powerful, but it has the user-friendliness you would expect from a mishmash of emacs- and bash-. GNU Screen is not for novices; novices will invariably confuse themselves amidst the numerous invisible backgrounded contexts.
:*] lets you efficiently synchronize data and documents between machines, transferring only the changed parts of large files (if bandwidth is an issue). It can work over ssh, so it is as secure as the rest of your system.
:*] works very well (on ''some'' versions of *nix, *dows, and other *OSes...). It makes any ssh server appear to be a local file system. It has a great user-experience if and only if you have a very fast, low-latency connection to your server
:*Lots of text editors support sftp out of the box. ] works on KDE and has fantastic and intuitive shell integration, too. This simple editor is the core of my home-made integrated development environment when I need to work on "other-than-default" languages and operating-systems, because it's very lightweight and can easily be modified or scripted. Basic syntax highlighting for "unsupported languages" can be easily added: and you can make that process as simple or as complicated as you wish, from providing a custom, simple list of keywords that should be colorized, all the way up to whatever level of language parsing theory you want to learn and apply. Shell integration is easy, so you can write a script to, say, rsync local data to the server and then execute it remotely - all from inside your text editor. <small>(If you have a Sun keyboard, by default, the special Enter key on the numeric keypad turns any line of any text-file into a bash shell! This feature can be emulated on some other operating systems and keyboards - use with caution!)</small> You can muck with and the . Similar text editors, like ], provide comparable feature sets - it boils down to user preference.
:*If you have not yet mastered the art of ssh public key exchange (for initiating secure, password-free ssh sessions), learn how to use ] (or your *nix system's equivalent, if you're using a different SSL tool set). Here's one tutorial from Berkeley, (or check your system's man page). Next, be sure you're comfortable with remote command-execution using ssh: this lets you seamlessly blend local- and remote- execution in scripts that execute on your development machine.
:A lot of people use fad-of-the-week tools to deploy scripts and executable code to remote programs; but the old tried-and-true methods of source-code management like git and svn tend to be more reliable.
:] (]) 13:36, 19 July 2016 (UTC)

::Thanks Nimur, that's very useful. ] (]) 15:01, 19 July 2016 (UTC)

: In addition to all of Nimur's suggestions:
:* Some people advocate ] rather than GNU Screen
:* Both emacs and VIM have pretty nice text-mode features, including syntax highlighting, and neither is remotely basic. Personally I use emacs in text mode (<tt>emacs -nw</tt>) even when editing locally, as I find its X11 interface rather naff. You you can just plain ssh to the remote machine and run either of them and have a nice enough experience.
:* Emacs has , and vim has mode, which work like the feature of Kate Nimur describes.
:* If the "remote" machine is still pretty local (such as a server in a chilly server room downstairs, that you'd rather not spend the day beside) you can forward X ''clients'' from it (to your desktop's display) with <tt>ssh -X</tt>. That requires that the remote machine have X ''libraries'', but not that it have a graphics card, display, or a running X server. I can't say I'd recommend running a heavy IDE like Eclipse or Netbeans over that, even on a decent LAN or CAN, but needs must when the devil vomits into your kettle.
: In general, ssh and rsync are really powerful - combined they are the giant Japanese robot of productivity. -- ]'''··–·'''] 14:14, 19 July 2016 (UTC)
::Server is about 9500 km away. ] (]) 15:01, 19 July 2016 (UTC)

= July 20 =

== Partitions and Disk Images ==

I have two computers that I would like to upgrade from windows 7 and windows 8.1 to windows 10, then, having already made disk images of them, and a restoral disk for the 8.1, return them to 7 & 8.1, and restore the C drives on each to the state on the disk images I intend to create. My understanding is that these hardrives will now be registered with MS for an upgrade to 10 any time in the future, so basically I will stay running 7 & 8.1 for now, but be able to upgrade at my leisure, in say a year or 3?

The computer running 8.1 has only a C Drive, 500GB, of which only about 120GB are used. The Computer running 7 is more Complicated. It has a 100GB SSD "C" and a 1T HD, "D", noth almost full. The question is, if I purchase a 1TB external drive and partition it into a 750 and a 250GB pair, will I be able to create the 100GB disk image in the 250GB partition and the 500GB disk image into the 750GB partition without inherent problems?

And when I create the disk image of the 100GB SSD "c" will it not drag along the 1TB HD "D" unless I click on "D" to do so?

Finally, since I will be restoring the disk images as soon as I have downloaded WIN 10 and then restored WIN 7 ^ 8.1, is there a preferred free software to do this efficiently?

Thanks. ] (]) 05:37, 20 July 2016 (UTC)
:I used ] to clone a single disk image of a working PC to a USB drive, and then used that cloned image to recreate the same working OS on two identical PCs - so not exactly what you're proposing, but the same method. Despite it appearing rather difficult to use, providing you are methodical and follow the prompts, it works very well. And the answers to your questions: clonezilla only copies used parts of the drive, so you will be able to get your 500GB drive into 750 very easily, ditto 100GB into the 250. Similarly, it will only clone the C drive if that's what you tell it to do.--] (]) 11:30, 20 July 2016 (UTC)

::Ehxcellent, thanks. ] (]) 20:58, 20 July 2016 (UTC)

:Note that that is registered for the "digital entitlement", but a fingerprint of various hardware (most importantly the motherboard). If you have a product key for the Windows installations (typically there's one on a sticker somewhere if the OS came with the machine), a spare internal drive of any size (well, at least 20GB), and a DVD burner or small USB drive, and you don't mind opening up the machines, a faster and safer approach is to unplug the hard drive(s) in the machine, plug in the spare drive, do a clean install of 10, and activate using the product key. This works starting with ]. You can use Microsoft's to make a bootable DVD or flash drive for the clean install. (Or and burn it to a DVD or use ] to put it on a USB drive.) -- ] (]) 18:38, 20 July 2016 (UTC)

::I get what you are at, but we tried opening up his machine to change to clean the fans, and just getting the back off it was a nightmare. I'll have no problem with the above method, and he's already ordered the external hard drive for friday delivery.

*Follow up question, if I use {{ping|Phil Holmes}} method withe clonezilla, will the external harddrive it uses as the target for making the disk image actually need to be partitioned ahead of time? Or will it just create a folder? Would trying to partition the drive later wipe out such a folder? (I.e., does partioning blank the drive?) ] (]) 20:58, 20 July 2016 (UTC)
::It creates a folder on the target drive with each "disk clone" information. So no need to partition the drive at all - just format it ready for use.--] (]) 18:41, 21 July 2016 (UTC)

== Virtual memory without hardware support ==

I have read that it is possible (or I might I have read that it is possible to have virtual memory without an MMU). Is this true? — ] ] 06:17, 20 July 2016 (UTC)

:Virtual memory can be implemented (slowly) with software. It is not effective. Software is commonly used to enhance virtual memory, not replace the MMU. The real question should be: "Why would you try to implement virtual memory without an MMU?" ] (]) 12:43, 20 July 2016 (UTC)
::I think that's absolutely correct - software can simulate anything the hardware MMU can do, by application of the ] principle. A pertinent follow-up question to this statement might be, "how (in)efficiently could that software be implemented?" That is a much trickier question and it would be architecture-specific; it would also entail a lot of subtle analysis and benchmarking. Software that emulates virtual memory would profoundly affect memory access patterns, which may wreak havoc on any heuristics about ] that are built into the cache hardware. So, a VM simulator that might superficially appear to add only a small fixed performance overhead may actually yield a terrifically bad performance slow-down due to ], for example.
::As noted above, MMU hardware is widely available, and if the application requires virtual memory, it ought to be running on appropriate hardware with appropriate system memory management software. ] (]) 13:04, 20 July 2016 (UTC)

:::See to see someone who emulated a 32-bit ARM CPU and MMU on an 8-bit microcontroller and then booted Linux on it. --] (]) 16:32, 20 July 2016 (UTC)

:To implement VM without an MMU basically requires emulating every memory reference instruction. Every instruction that touches memory would have to call a function to determine if that memory location is resident or needs to be loaded from disk. To do this, you'd need to either emulate EVERY instruction, or do some kind of compilation-like step that converts the code into different code, replacing every memory reference with a function call. Either way, the performance will be abysmal compared to running the native code with an MMU to handle nonresident pages, probably many times slower. So while it's possible, using an MMU is vastly preferable. That's why MMUs were invented in the first place. ] (]) 16:46, 20 July 2016 (UTC)

:A real-world example is the ] used for ] interactive fiction. The original implementations (on the Apple II, Commodore 64, etc.) used software paging to load ~128K of code and text into machines with <64K of RAM. I remember reading somewhere that they used 256-byte pages, but I can't find a source for that now. According to they used ] eviction. -- ] (]) 17:38, 20 July 2016 (UTC)

:You might want to look at ]. This is normally used when the amount of physical RAM is larger than the ], but it can also be used for virtual memory. However, bank switching is usually co-operative, bank switching on each ] is likely to be expensive. ] (]) 18:01, 20 July 2016 (UTC)
::There's also ]. DOS programs used them a lot. ] (]) 18:14, 20 July 2016 (UTC)


= July 21 =

== Increasing computer speed ==

Where are scientists working on to make computations faster? Where is the bottle neck in computer nowadays? Where was the bottle neck 10 or 20 years back? <!-- Template:Unsigned --><small><span class="autosigned">—&nbsp;Preceding ] comment added by ] (] • ]) 00:02, 21 July 2016 (UTC)</span></small> <!--Autosigned by SineBot-->

:That's a massive topic... how about checking out the most recent issue of , the ]'s magazine for students interested in computing machinery? It's the premiere review magazine for students in this field, and a good place to start to help you get oriented towards more specific current research topics. ] (]) 00:58, 21 July 2016 (UTC)

:] is the main obstacle to faster sequential computation. The main obstacle to parallel computation is that we're bad at designing parallel algorithms (except for ] problems). -- ] (]) 07:07, 21 July 2016 (UTC)
::Alternatively, we could say that the obstacle is that many interesting problems are simply not ''amenable'' to parallelization. Kind of tough to say what could be done if we were cleverer, and could develop parallel routines analogous to e.g. ]. ] (]) 15:48, 21 July 2016 (UTC)
:::You might be interested in ]. ] (]) 02:11, 22 July 2016 (UTC)

==Oscilloscope==
Is it OK to test 220 volts ] on a ''single channel'' Oscilloscope ?] (]) 01:48, 22 July 2016 (UTC)
:No it is absolutely not OK to test mains voltage on an oscilloscope, unless you know precisely what you are doing and what safety measures to take. If you need to ask here, don't do it. To answer the question, there are oscilloscopes that CAN be used on mains voltage, it should say on the scope, if you can't see a max voltage, or are uncertain how to read what is written on the scope, don't do it, seek assistance from someone with experience / qualifications. ] (]) 02:05, 22 July 2016 (UTC)
:(ec)Probably not. You should check the manual to see what the rating is. A knob on the front for adjusting the gain should also give a clue. Such a voltage is dangerous and could kill you, so you would need appropriate earthing and probe insulation. Instead you could put the mains AC through a step down transformer, say to 5 volts which is likely to be workable with your oscilloscope. Mains AC also has much higher voltage transients due to electric motors turning on and off, so the rating of equipment needs to be much higher to avoid damage. ] (]) 02:13, 22 July 2016 (UTC)
:Live household electric wires at 220 volts can kill you. Do not work with live mains. Do not connect them to your test equipment.
:For the most part, there is no good reason to hook up mains lines to an oscilloscope - that type of test equipment is normally used for analyzing much lower-power signals - it's rarely needed for analyzing power lines.
:In the exceptional case where detailed analysis of high voltages or high power ''is'' required, a special probe called a ] is used. This allows a skilled engineer to investigate the high-power system without ever making electrical or physical contact with the mains wire. If you don't know what this is, or how to use it, call an electrician to help you. Death by electrocution is very easy when you're dealing with 220 volt mains lines. Death by electrocution happens very fast, is very unpleasant, and is generally irreversible, so don't play with wires if you have any doubts about the correct safety procedures. ] (]) 03:52, 22 July 2016 (UTC)

= July 22 =

== Audio software ==

I have hundreds of film songs which are named as 001, 002, 003...and so on. I want to rename them such as the song file name should be the opening lines of the song. (e.g. If the song begins with 'oh my god' then the song file name should be oh my god.) Is there any software which can do this? Thank you.] (]) 03:00, 22 July 2016 (UTC)

:There is software that compares a song against a large database and changes the title to the actual title of that song. It would then need to take an extra step of looking up the lyrics and renaming it as you say. Seems possible, but I doubt if it exists yet. Something else to consider is that the opening lyrics aren't always the most memorable. ] (]) 03:29, 22 July 2016 (UTC)

== SRMv2: System Restore Managerv2 ==

1) The ''Disk Space to use for System Restore'' based on the top-right-hand-side of the software's window, the ''GB'' increments whenever I do a ''System Restore''. <small>Note: I don’t/didn’t install anything for quite some time now, and my ''Windows Update'' system is off.</small>

2) ''Selected Fixed Drive'' drop-down-list of the ''Disk Space to use for System Restore'' section, is allocated in C drive. Where is this place located in the C drive, and, would it create problems if I delete files from this location?

] (]) 09:24, 22 July 2016 (UTC)

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December 13

Where can I find a thesis of recently released Gemini 2.0?

For Gemini 1.5, I find its thesis.

What about recently released Gemini 2.0? HarryOrange (talk) 21:53, 13 December 2024 (UTC)

Here?  --Lambiam 21:55, 14 December 2024 (UTC)
OK That's Gemini 2.0 release information. HarryOrange (talk) 16:52, 15 December 2024 (UTC)

December 15

Questions About New Laptop Computer

My old laptop computer developed problems with the power, so that it wouldn't start when connected to regular line current. It would start when connected to high-amperage current in an electronics store, but that wasn't useful, and it was time to replace it after five years. I now have some questions about problems with a new laptop computer. The new laptop computer is an HP running Windows 11. Robert McClenon (talk) 04:43, 15 December 2024 (UTC)

Cursor Jumping Randomly

Sometimes when I am typing in a Word document or editing Misplaced Pages in a source window, I discover that the cursor isn't where I think it should be. The cursor has jumped to somewhere else on the screen, apparently randomly. I have to do a Ctrl-Z to undo what I typed in the wrong place, and then move the cursor back to where I want it. If this is caused by line noise, how do I minimize the impact? How likely is that a new mouse would resolve the problem? Are there any settings that I should diddle with? Robert McClenon (talk) 04:43, 15 December 2024 (UTC)

First thing I would do is give the mouse and mousepad a good clean and disconnect and reconnect it. Shantavira| 09:14, 15 December 2024 (UTC)
Possibly due to your hand brushing the trackpad while typing. If you have a mouse, you could experiment with disabling the trackpad: how to disable touchpad on hp laptop. Or even just try turning it off while typing. This erratic caret jumping used to happen to me a lot, too, when my laptop was new, until I found the key to disable the trackpad.
The term caret or insertion point is useful to exclude the mouse cursor (the pointer) from searches.  Card Zero  (talk) 12:54, 15 December 2024 (UTC)
Thank you, User:Card Zero. I disabled the touchpad. For users who always use a mouse, the touchpad is a complication. Robert McClenon (talk) 19:06, 15 December 2024 (UTC)
I now have a possibly useless question. The documentation referred to an option that disables the touchpad when there is a mouse, but the only option that I found in the settings is the option that always disables the touchpad. I would like to specify that the touchpad is disabled when there is a mouse, and enable it if there is no mouse. This makes very little difference because I will always use a mouse. Is it possible that that option isn't available on my computer? This isn't important. Robert McClenon (talk) 02:38, 17 December 2024 (UTC)
Possibly true, your system vendor might not have put any software on there to do that automatically. The general rule with computers is, you can make it do what you want, it's just a question of how much effort is involved in that. To do stuff automatically when hardware is (dis)connected, you have to set up something that subscribes to WMI events: Windows's thing for letting all interested parties know "hey some new device just showed up". Here's an answer for how to run a script when a device is connected: , if you really want to put in the effort. Alternatively if you just want something quicker and simpler but not automatic, you can install AutoHotkey (quite useful program) and set a shortcut key on the keyboard to disable/enable touchpad. --Slowking Man (talk) 19:11, 26 December 2024 (UTC)

Network File Sharing

With the old laptop, I had set up network file sharing, so that the laptop computer could view and edit files in shared folders on my desktop computer, a Dell, also running Windows 11, if they were both within range of my wireless router (and the desktop computer always is). The desktop computer could also access files in shared folders on the laptop, if the laptop was I have tried to set up network file sharing with the new laptop computer. I tried calling the technical support offered by the electronics chain that I bought the computers from, and I made seven calls to them, none of which worked, and I have concluded that their technical support people don't know what they are doing, and, worse, don't know the limits of their knowledge. Does anyone have advice on a book that will tell me how to set up network file sharing with Windows 11, that has neither too little nor too much information for a retired database engineer? Robert McClenon (talk) 04:43, 15 December 2024 (UTC)

@Robert McClenon Did you try this? TheTechie@enwiki (she/they | talk) 20:21, 16 December 2024 (UTC)
User:TheTechie - Thank you. That describes the basics, and describes what I had done successfully with the previous laptop computer. I need either a much greater level of detail, or a troubleshooting guide, or something like that. That was helpful in that it doesn't point out anything that I am doing wrong. Robert McClenon (talk) 02:31, 17 December 2024 (UTC)
Asking for clarification: you did all the steps in the section "How do I troubleshoot sharing files and folders" on that page, on the new laptop? After doing those steps, you still don't "see" your desktop in File Explorer on laptop? (Restart the laptop just in case.) Slowking Man (talk) 04:24, 26 December 2024 (UTC)
Check that all the computers are on the same network. See if all the IP addresses are different. See if the wifi has the network profile set to Private. See if file explorer shows it in Network, or \\newlaptopname . You may have to check file wall settings Graeme Bartlett (talk) 07:29, 26 December 2024 (UTC)

December 19

Scanning all available streams

Hello there. I'm have a question: How to scan all available online streams from a specified server and port given? For example, I've found a Wowza Streaming Engine server at 115.79.46.164 and port 1935. I want to know which website or software can help me to find all active streams on this server. Thanks for reading. Ccv2020 (talk) 14:22, 16 December 2024 (UTC)

nmap -- Finlay McWalter··–·Talk 17:02, 16 December 2024 (UTC)
nmap is just going to let you toss packets to the server and inspect the packets that server decides to send you back in reply. Which is great for networking analysis, but we want to speak application layer here and talk with the "streaming" software on the remote host. Does help at all? (You will need curl if not already installed.) Do take note, the party which owns the server could always have configured it to restrict the information it will give out to the public. --Slowking Man (talk) 19:32, 26 December 2024 (UTC)

.kp domains

How many .kp domains are there? Gnu779 (talk) 13:10, 19 December 2024 (UTC)

Did you see .kp#Existing_and_externally_accessible_domain_list? Polygnotus (talk) 19:10, 19 December 2024 (UTC)
https://www.northkoreatech.org/the-north-korean-website-list/ is a bit outdated but has more background info. Polygnotus (talk) 19:20, 19 December 2024 (UTC)
It's ok, bro. I can still view the outdated ones with the Wayback Machine at the Internet Archive. Thanks, Gnu779 (talk) 16:10, 20 December 2024 (UTC)


December 24

Is this bug in the google search ?

I searched for the keywords: "Israel Folau" "Margaret Court" "David Tyree", then Google shows me blank. Is this bug?HarryOrange (talk) 22:35, 24 December 2024 (UTC)

If I do the same search, this question shows up (twice, due to how the refdesk is organized) plus a link to Stuff. So, it doesn't seem to be a bug. I tried the same format search with much more famous people and got hundreds of links. Matt Deres (talk) 13:20, 25 December 2024 (UTC)
Remember that Google has numerous servers that can respond to your search, and they do not necessarily all behave the same. --142.112.149.206 (talk) 22:17, 27 December 2024 (UTC)


December 28

Categories: