| Developer | CDSE - Centro de Desenvolvimento de Sistemas Elétricos Ltda. |
|---|---|
| Type | Home computer |
| Release date | 1983; 41 years ago (1983) |
| Operating system | 8K Sinclair BASIC |
| CPU | Z80 at 3.25 MHz |
| Memory | 32 to 48 KB |
| Removable storage | Audio cassette |
| Display | Monochrome TV; 32 x 24 characters, 64 x 48 using semigraphic symbols |
| Sound | Beeper |
| Input | 69-key chiclet keyboard, cursor keys, numeric keypad |
| Connectivity | RS-232C serial port, Joystick port |
The Apply 300 was a Brazilian clone of the Sinclair ZX81 introduced by CDSE - Centro de Desenvolvimento de Sistemas Elétricos Ltda.
It came out in 1983, at a time where several clones of popular computers were introduced on the Brazilian market. It competed with machines like the AS-1000, TK83, TK85, Ringo R470 or CP-200, being considered today as a rare machine by computer museums.
Features
General features of the Apply 300 match those of the original ZX81 machine, with a few enhancements.
The power supply was internal and the machine featured a Z80A processor at 3.25 MHz, 8K ROM and 32 or 48 KB of RAM.
The keyboard was chiclet type, but offered 69 keys, including cursor keys and numeric keypad.
It offered an expansion slot at the black, a RS-232C serial port and a joystick port. There was a connection for a cassette tape recorder, with the machine being able to load and save data into tapes at 300 baud.
The Apply 300 could be connected to a standard television over an RF out or composite video connection, providing a monochrome TV signal. Graphics where the regular ZX81 text mode: 32 X 24 characters, with 64 x 44 semigraphics.
The machine was capable of producing simple beeper like sound effects.
References
- ^ Inojosa, Ricardo (February 1984). "Os Pequenos Notáveis". Micro Sistemas. pp. 32–40.
- "cdSE Apply 300 – Revista Microsistemas – MCC - Museu Capixaba do Computador". museucapixaba.com.br (in Brazilian Portuguese). 2022-01-01. Retrieved 2023-04-13.
- ^ Cardi, Marilza (2002). Evolução da computação no Brasil e sua relação com fatos internacionais (PDF). Universidade Federal de Santa Catarina. pp. 132, 146.
- Matthies, Gilberto. "Museu virtual dos microcomputadores de 1983". gilbertomatthies.tripod.com. Retrieved 2023-04-13.
- "Planet Sinclair: Computers: Clones and variants: South American clones". rk.nvg.ntnu.no. Retrieved 2023-04-13.
- ^ "Apply 300: o mais profissional dos micros pessoais". Micro Sistemas. No. 22. July 1983. p. 85.
- "HCM: most wanted items: South America". www.homecomputer.de. Retrieved 2023-04-14.
- "Procura-se cdSE Apply 300 – Ajude o MCC a encontrar!". MCC - Museu Capixaba do Computador (in Brazilian Portuguese). 2021-01-01. Retrieved 2023-04-14.
| Sinclair computers, derivatives, and clones | ||
|---|---|---|
| Sinclair Research / Science of Cambridge |  | |
| Amstrad | ||
| Licenced systems | ||
| Timex Corporation | ||
| Cambridge Computer | ||
| Lists of clones | ||
| Compatible or related systems |
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| Sinclair Research peripherals | ||
| Timex peripherals |
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| Other peripherals | ||
| People |
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