| 24 Line I/O Port |
Controlled using BASIC, with suitable interface circuits will control LEDs, motors, relays, lights, sound generators. |
Timex/Sinclair 1000 |
| Digital to Analog Converter |
Fits onto input/output port to give one analog output (0 to 2.55 volts); space on board for two extra converters. |
Timex/Sinclair 1000 |
| Keyboard |
Full-size 40 key keyboard. Symbols marked in two colors. |
Sinclair ZX80, Timex/Sinclair 1000 |
| Motherboard |
Plugs into the back of ZX81 or ZX80. Printer/RAM pack plugs onto back. Has two female connectors to accept expansion boards. |
Sinclair ZX80, Timex/Sinclair 1000 |
| Timer/Counter/Music Board |
Three programmable counters. Controlled in Basic. May be used as timer, counters, or frequency generators (including audio range). |
Timex/Sinclair 1000 |
