ZX Data Finder
High capacity file manager; versatile catalog/index/reference tool; edit, search, and display routines explained in text; a course on file and data storage techniques. 16K.
Timex/Sinclair 1000
16K RAM Pack
Injection molded plastic case; overcomes wobble and disconnection problems characteristic of other units; optional extra is a keyboard sounder giving audible feedback when a key is pressed.
Adventures in Artificial Intelligence
Life forms created range from simple “reflex” creatures to those capable of “learning” and “killing”; entire “communities” are set up. Machine code for fast action. 16K.
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CWSS
Split screen CW Transceive Program. Received CW is printed on the top 10 lines of the screen; the transmit display, the bottom 10 lines; the two halves scroll independently. Will copy CW up to about 40 wpm. I/O interface required; 2 board etched circuit board set for the interface.
16K or 32K RAM Plans
Plans to expand 1K model to 16K or ZX81 with 16K to 32K for under $30. Fits inside ZX81.
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Joystick for ZX81
Connect Atari joystick to ZX81. Access through Basic or machine code. Complete kit.
Inteli-Quiz
Quiz games with multiple quizzes per cassette. Includes general knowledge, movie trivia and sports trivia. Also sold as Quiz Wiz. 16K.
Teach Your ZX80/81 to Talk
Detailed plans for hardware, parts sources, and software to make your computer produce natural speech.
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