The TK80 was a home computer produced by Microdigital Eletrônica.[1][2][3][4] A clone of the Sinclair ZX80,[5][6][7] it was introduced along with the TK82C in 1981 during the "I Feira Internacional de Informática". There were two versions, one with 1 KB RAM costing Cr$ 68,850 and another with 2 KB costing Cr$73,650.
| Manufacturer | Microdigital Eletrônica |
|---|---|
| Type | Home computer |
| Release date | Brazil: 1981 |
| Introductory price | Cr$ 68,850 (1KB RAM), Cr$ 73,650 (2KB RAM) |
| Media | Cassette tape |
| Operating system | 4K BASIC |
| CPU | Z80A @ 3.25 MHz |
| Memory | 1 or 2 KB |
| Display | Monochrome TV out; 24 lines × 32 characters or 64 × 48 block graphics mode |
| Backward compatibility | ZX80 |
| Successor | TK82C |
In the January 1982 issue of Micro Sistemas magazine, Tomas Roberto Kovari, Microdigital's engineer, stated that the machines were being sold with a photocopied manual, while a printed version was being developed.[8] Kovari estimated a potential market for 10000 machines in Brazil, with expected buyers being novelty seekers, students and self employed professionals.[8]
According to some sources, the TK80 was never commercially produced, with only prototypes existing.[2][9][10]
Specifications
editSpecifications were similar to the original machine:
- CPU: Z80A @ 3.25 MHz
- Memory: ROM: 4 KiB; RAM: 1 or 2 KiB
- Keyboard: 40 keys membrane keyboard
- Display: 32 × 22 text; 64 × 44 semigraphics
- Expansion: 1 slot
- Outputs: 1 TV out (RF modulator, channel 3); cassette tape recorder audio in/out
- Storage: Cassette tape (300 bauds)
References
edit- ^ Martins, Marcelo (2012). "Microdigital". Clube do TK90X (in Portuguese). Retrieved 2023-01-20.
- ^ a b "Directory: /Vintage/Sinclair/80/Clones/Microdigital, Brazil/TK80/". kio's home. Retrieved 2023-01-20.
- ^ "Historia". Z81 Never Die (in Portuguese). Retrieved 2023-01-20.
- ^ Veja, Edições 1090-1094 (in Brazilian Portuguese). Editora Abril. 1989. p. 18.
- ^ Durán, Miguel. "Microdigital TK 80". El Museo de los 8 Bits (in Spanish). Retrieved 2023-01-20.
- ^ "TK-80". 1000 BiT. Retrieved 2023-01-20.
- ^ Fücher, Rodolfo (2022-07-16). "Análise: Reserva de mercado tornou indústria nacional de informática um nascedouro de clones". Folha de São Paulo (in Brazilian Portuguese). Retrieved 2023-01-20.
- ^ a b Noronha, Paulo (January 1982). "Simples e baratos, os novos micros pessoais estão chegando". Micro Sistemas (in Portuguese). No. 4. p. 12.
- ^ Silva, Daniel (2002). "Templo Digital - 8 BITS" (in Portuguese). Archived from the original on 2004-03-07. Retrieved 2023-01-20.
- ^ Cardoso, Carlos (2021-09-21). "Adeus Sir Clive Sinclair, obrigado por tudo" [Goodbye Sir Clive Sinclair, thanks for everything]. Meio Bit (in Brazilian Portuguese). Retrieved 2023-01-20.