Monthly Income Graph
Creates a monthly income graph for a year. It lets you see which months your income rises and which months it falls.
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Timex/Sinclair 1000
Grimm’s Fairy Trails
Review of Timex’s response to PACMAN. The maze-pursuit game has 6 levels of play, from crawl to very fast.
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Converting Decimals to Floating Point Binary
Explains how positive integers are converted to Sinclair’s internal floating point.
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BB-1 8-Bit Input/Output Module Kit
Two Intel 8212 8-bit I/O port chips are the heart of the BB-1. Byte-Back’s module is compatible with both ZX and Timex units and neatly uses memory locations 32764 and 32766 to store input and output information.
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ZX81 Home Computer Package
Lamo-Lem’s Home Computer Package of 4 machine code programs offer a good variety.
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Hardware Project
This circuit will simplify loading and saving programs by eliminating ground loop noise without the need to pull out the earphone plug during saving and the microphone plug during loading.
Computer Keyboards Professional Keyboard Kit and Enclosure for ZX81
Review of Gladstone’s keyboard and enclosure.
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MD-1 Direct-Connect Modem and RS-232 Port
Review of Byte-Back’s modem.
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Two Numbers in One Byte
Storing two integers (0-15 range) in one byte.
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Printer with Mini-Interface
CAI has introduced a stand-alone printer with a mini-interface for the ZX/TS computer. It works only with 16K and is $139.95.
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