Graphics
| Name | Description | Computers |
|---|---|---|
| Blinking Cursor Module | Causes normal and syntax characters, plus various graphics, to blink. | Sinclair ZX80 |
| Color Board | Program each character square in one of 16 colors. Each character can be defined for high resolution graphics. | Sinclair ZX80 |
| Full animated graphics for ZX80 | Kit, no screen flicker. | Sinclair ZX80 |
| Programmable Character Generator | Standard letters; inverse characters may be mixed or interchanged with 2 sets of programmable characters. 8×8 matrix. Written by 8 POKE commands. Occupies 1E00h-1FFFh region of BASIC ROM. | Sinclair ZX80, Timex/Sinclair 1000 |
| Slow/Fast kit for ZX80 with 8K ROM | FAST and SLOW modes on ZX80 with 8K ROM. PCB with complete instructions and parts list. PCB will work with new ROMs if installed properly. | Sinclair ZX80 |
Interfacing
| Name | Description | Computers |
|---|---|---|
| 3 Port I/O board | Programmable 8255 PIA. Space for analog-to-digital converter, relays, clock chip, etc. Expansion connector for RAM pack. | Sinclair ZX80, Timex/Sinclair 1000 |
| BB-1 Control Module | 8 independent relays with LED status indicators and 8 TTL inputs with Schmitt trigger buffers. Single POKE to change/latch each relay. Read all 8 inputs in a single PEEK. More than one BB-1 can be attached to the computer. The BB-1 was used for: | Sinclair ZX80, Sinclair ZX81 |
| Buffered Bus Expansion Board | This motherboard provides four 44-pin card connectors, room for wire wrap and voltage regulator. Eight chips are needed, five for buffers and three for decoding bi-directional data bus buffers. Budget Robotics & Computing purchased the rights to make and sell the Computer Continuum board in 1984. | Sinclair ZX80, Sinclair ZX81 |
| 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 |
| Parallel I/O port | Interface computer to the real world. | Sinclair ZX80 |
| QS Motherboard | Allows for connecting 16K RAM pack, QS Sound Board and another board. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| RD 8100 System | Modular interface system to permit real-time application of the ZX80/81. Connected by motherboard; 5 modules available. The RD 8100 is a modular interface system capable of performing a wide variety of scientific tasks, when coupled with a Sinclair Computer (ZX 81 and Spectrum). Flexibility and compatability are built into the system, which is simple to | Sinclair ZX80, Timex/Sinclair 1000 |
| VOTEM | The VOTEM was a hardware/software package that could measure, display and record real world analog signals via the cassette input. Any physical phenomenon (pressure, light temperature, etc.) that could be represented by a DC voltage could be measured. The name of the product came from the fact that it could measure VOltage and TEMperature. The | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2068, Downloadable |
| Widget | Interface board allows ZX80 to communicate through serial (RS232) port and parallel TTL input and output ports. | Sinclair ZX80 |
| ZX80/1 User Port | Small board allowing 8 independent input channels and 8 output channels, directly controlled from Basic or machine code. | Sinclair ZX80, Timex/Sinclair 1000 |
Joystick
| Name | Description | Computers |
|---|---|---|
| Dual Joystick System | Sinclair ZX80, Timex/Sinclair 1000 | |
| Joystick for 8K ROM ZX80 | Plans and parts to add a joystick to ZX80 with 8K ROM. | Sinclair ZX80 |
| Single Joystick System | Sinclair ZX80, Timex/Sinclair 1000 |
Keyboard
| Name | Description | Computers |
|---|---|---|
| 55-key Keyboard | Plans and complete kit (keyboard, parts, etc) for add-on keyboard. | Sinclair ZX80 |
| Compact Keyboard | Full sized, uncased. No soldering required. Repeat key included. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| Double "H" Keyboard | Full-size, full-stroke, 53 key, fully assembled, gold contact keyboard for all Sinclair ZX80/ZX81, MicroAce, and TS 1000 computers. Full-length space bar and 2 oversized shift keys for easier typing. Includes plans and schematics for three special circuits you can build to utilize the 12 extra keys: electronic shift-lock, automatic repeat, automatic shift. | Sinclair ZX80, Timex/Sinclair 1000 |
| E-Z Key 60 | Large 60 key tactile feel keyboard plugs into same connectors as the existing keyboard on your ZX81, TS1000, TS1500 or TS2000. TS1000 legends and graphics in three colors on the base-molded moving key with alphanumeric characters; 8 automatic shifted keys, 2 shift keys, numeric key pad, 5″ space bar. 60 small calculator-style keys, silk-screened legends | Sinclair ZX80, Timex/Sinclair 1000 |
| Keyboard | Full-size 40 key keyboard. Symbols marked in two colors. | Sinclair ZX80, Timex/Sinclair 1000 |
| Keyboard beeper | Low power CMOS circuit. Beeps when key is pressed. | Sinclair ZX80 |
| Keyboard Kit | Full size keyboard with repeat key and single key rubout. | Sinclair ZX80 |
| Keyboard Overlay | Vinyl overlay similar to Kopak design but thinner. | Sinclair ZX80, Timex/Sinclair 1000 |
| Keyboard Sounder | Emits a short beep for keypresses. Models for ZX80 and ZX81. | Sinclair ZX80, Sinclair ZX81 |
| Keyboard Tactile Feedback Overlay | Clear vinyl keyboard overlay with holes for each key. | Sinclair ZX80, Timex/Sinclair 1000 |
| Keyboard with complete parts and plans | Sinclair ZX80 | |
| Keypad | Two different keypads available, matching double H keyboard. Both are assembled but unwired, so you can use them either for numerical keypads or as extra keys. | MicroAce, Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| Plans for keyboard conversion with reverse video | Sinclair ZX80 | |
| Repeating Key Module | Sinclair ZX80, Timex/Sinclair 1000 | |
| Touch-A-Matic | Vinyl overlay for Sinclair keyboard with punched holes to aid in data entry. | MicroAce, Sinclair ZX80, Timex/Sinclair 1000 |
| Typex/81 Keyboard Overlay | Allows “touch typing” and improved game playing. Made of clear, self-adhesive vinyl with key-shaped rectangular holes for easy finger positioning and tactile feedback. | Sinclair ZX80, Timex/Sinclair 1000 |
| Wired keyboard, complete with plans | Sinclair ZX80 |
Miscellaneous
| Name | Description | Computers |
|---|---|---|
| Bus Extender | ZX81/TS1000 bus extender. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2068 |
| PrestoDigitizer | Digitizing tablet originally designed for the ZX80. User would have been able to write on the table and have the output appear as characters or draw on the tablet and output as graphics on the screen. The tablet was eventually available for Atari computers. | Sinclair ZX80 |
| RF shield for ZX80 or Microace | Kit to reduce TV intereference. | MicroAce, Sinclair ZX80 |
| Slow Mode for 4K ROM | Turn ZX80/MicroAce into a machine more powerful than the ZX81, e.g., run with either 4K or 8K ROMs. | Sinclair ZX80 |
Power
| Name | Description | Computers |
|---|---|---|
| Overvolt protection | Protect all ZX80/81 ICs if voltage regulator fails by crowbar and fusing. | Sinclair ZX80, Timex/Sinclair 1000 |
| Surge Clamping Diodes | Prevent voltage overage. | Sinclair ZX80, Timex/Sinclair 1000 |
Printer
| Name | Description | Computers |
|---|---|---|
| ZX Printer | Designed exclusively for use with the ZX81 (and ZX80 with 8K BASIC ROM), the printer offers full alphanumerics and highly sophisticated graphics. COPY command prints out exactly what is on the whole TV screen. Printing speed is 50 characters per second, with 32 characters per line and 9 lines per vertical inch. | Sinclair ZX80, Timex/Sinclair 1000 |
RAM
| Name | Description | Computers |
|---|---|---|
| 1-3K Memory Expansion | Uses static RAM. | Sinclair ZX80 |
| 16K RAM | Sinclair ZX80, Timex/Sinclair 1000 | |
| 16K RAM Pack | Expandable to 32K. | Sinclair ZX80, Timex/Sinclair 1000 |
| 1K RAM Board | Static RAM; expands internal memory to 2K. | Sinclair ZX80 |
| 2K RAM Board | Static RAM; expands internal memory to 3K. | Sinclair ZX80 |
| 2K RAM Pack | Static RAM expansion; works with built-in RAM. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| 32K RAM Pack | Expandable to 64K. RKL joystick systems can be added to this unit. | Sinclair ZX80, Timex/Sinclair 1000 |
| 3K RAM Board | Static RAM; expands internal memory to 4K. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| 48K RAM Pack | Sinclair ZX80, Timex/Sinclair 1000 | |
| 4K RAM Pack | Static RAM expansion; works with built-in RAM. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| 64K RAM Pack | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 | |
| Add on RAM for ZX80 instructions | Complete schematic, parts list, sources, and how-to. | Sinclair ZX80 |
| Decoder | Fits inside the ZX80/ZX81 and remaps internal RAM to 8-9K or 9-10K. For use with external RAM pack. | Sinclair ZX80, Sinclair ZX81 |
| M-16 Memory Module | Stackable with Sinclair RAM or other M-16 modules to 48K. | Sinclair ZX80, Timex/Sinclair 1000 |
ROM
| Name | Description | Computers |
|---|---|---|
| 8K BASIC ROM | The new BASIC allows the use of floating point arithmetic to nine digit accuracy, and contains log and trig functions with inverses. This ROM facilitates improved graphics, and contains 37 new functions including DRAW, DATA, ARCSIN, VAL, and SCROLL. The plug-in conversion includes a new keyboard template and a supplementary manual. | Sinclair ZX80 |
| ZX80 ROM switch | Use your 4K or 8K software at the flick of a switch. Optional add-ons include keyboard beeper and cassette load processor. | Sinclair ZX80 |
RS232
| Name | Description | Computers |
|---|---|---|
| MD-1 Modem | Includes RS-232 port. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
Sound/Speech
| Name | Description | Computers |
|---|---|---|
| QS Sound Board | AY-3-8910 sound generator based sound synthesizer. Three voices, 5 octave range. Sinclair Place imported a version manufactured by Indescomp. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| The Parrot | The Parrot used the General Instruments SP0256 speech synthesizer chip, which used 64 allophones to generate speech. Supplied with software on cassette enabling you to select, string together, and pronounce the sounds. | Sinclair ZX80, Timex/Sinclair 1000 |
Tape
| Name | Description | Computers |
|---|---|---|
| Cassette output level setting | Schematic for precision setting of cassette output level. | Sinclair ZX80, Timex/Sinclair 1000 |
| Tape Recorder Interface | Improves load signal level. | Sinclair ZX80, Sinclair ZX81 |
| WIDGITAPE | Standard cassette recorder modified for computer control. Offers file directory, read/write from programs. Uses endless loop tapes. | Sinclair ZX80, Timex/Sinclair 1000 |
| Z-DUBBER | The Z-DUBBER is an interface between the Sinclair computer and its cassette recorder which allowed even the most difficult cassette program to load more easily. Additionally, the Z-DUBBER allowed you to connect two cassette recorders to create perfect backup copies of your programs. The Z-DUBBER operated on two AAA cells. | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2068 |
Video
| Name | Description | Computers |
|---|---|---|
| Video Amplifier Unit | Produces composite video signal for monitor. | Sinclair ZX80, Sinclair ZX81 |
| Video Inverter Kit | Sinclair ZX80 | |
| Video Upgrade Board | Flicker-free display. 8K ROM required. The SLOW mode upgrade was a small double-sided circuit board that had to be soldered to the ZX80 PCB via several flying leads. In addition, several tracks of the ZX80 PCB had to be cut. The SLOW mode board works by generating horizontal synchronisation (HSync) pulses during the top and | MicroAce, Sinclair ZX80 |