Universal Mailing List
Customized version of Universal Inventory File. 16K.
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Timex/Sinclair 1000
Custom Programmed 2K ROMs
Service to store BASIC or machine language programs in EPROMs. For use with Professional Electronics’ printer interface board.
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Cypher 9
Menu-driven, multi-featured cipher generator with encode/decode/scramble and two save options for secure communications. Frequency analysis is inhibited and convenient cipher changing allows security comparable to “one-time pads.” 16K.
Keyboard Kit
73 full size keys with 46 automatically shifted functions, editing/game key row and special graphics section. Double-sided PC board, 3 color silkscreened key legends, parts and instructions.
Centronics Printer Interface
Uses ports A and B of the I/O board. Printer commands and machine language programs are stored in an 8K memory area not used by computer. Professional Electronics I/O board required.
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