The TK-90X from Microdigital is a ZX Spectrum clone from Brazil. It was produced in 1985 when importing foreign computers to Brazil was illegal and the Speccy was one of the rulers in the 8 bit personal computer world.
This computer is very similar to the original Spectrum. You had the Z80A running at 3.58 MHz, 16Kb and the 48Kb versions (mine is 48Kb), built-in Sinclair BASIC and the usual rubber keyboard.
I bought this TK-90X from a guy in Argentina so the ROM is in Spanish. It is in very good shape considering that it is not easy to find well kept computers from this time. I also got the original box along with it, even though that is not in such great shape:
Even though there were some compatibility issues with a few games, overall the TK-90X was a good Speccy clone especially when compared to other clones of the same era.
Technical Specs:
| NAME | TK-90X |
| MANUFACTURER | Microdigital |
| TYPE | Home Computer |
| ORIGIN | Brazil |
| YEAR | 1985 |
| BUILT IN LANGUAGE | Sinclair BASIC |
| KEYBOARD | Rubber keyboard – 40 keys |
| CPU | Z80A |
| SPEED | 3.58 MHz |
| RAM | 16K and 48K versions |
| ROM | 16 KB |
| TEXT MODES | 32 chars. x 24 lines |
| GRAPHIC MODES | 256 x 192 dots |
| COLORS | 8 with two tones each (normal and bright) |
| SOUND | 1 voice / 10 octaves (via TV set) |
| I/O PORTS | Expansion port, tape-recorder (1200 bauds), RF video out, Joystick |
| POWER SUPPLY | External 9V DC power supply unit |
| PERIPHERALS | Sinclair (not all) and third sources peripherals |
