Sinclair ZX81
Description
Calculatorul ZX81 este un calculator personal produs de compania Sinlair Reseach din Marea Britanie. A fost lansat in 1981 la un pret de 49.95 lire sub forma de KIT sau 69.95 lire asamblat.
Fiind un calculator ieftin a avut un succees foarte mare, fiind vandute mai mult de 1,5 milioane unitati pana la oprirea productiei in 1984.
A mai fost produs sub licenta de firma TIMEX in SUA.
| NAME | ZX 81 |
| MANUFACTURER | Sinclair |
| TYPE | Home Computer |
| ORIGIN | United Kingdom |
| YEAR | march 1981 |
| BUILT IN LANGUAGE | Sinclair Basic |
| KEYBOARD | Touch-sensitive keyboard, 40 keys |
| CPU | Zilog Z80A |
| SPEED | 3.5 MHz |
| RAM | 1 KB (901 bytes available, up to 64 KB) |
| ROM | 8 KB |
| TEXT MODES | 32 x 24 (but 2 lines are reserved for system messages and commands) |
| GRAPHIC MODES | 64 x 44 |
| COLORS | Black and white |
| SOUND | None |
| SIZE / WEIGHT | 167 x 175 x 40 mm / 350gr |
| I/O PORTS | Z80 Bus, tape, video |
| POWER SUPPLY | 9V DC , 600 mA (centre polarity = +ve) |
| PRICE | Kit :£50 (UK, june 1981) / Ready-built : £70 (UK, june 1981) |
