Alphabet Soup & Numbers Up
Two games: one uses letters, other uses numbers. Arrange letters or numbers in correct order; pieces move using arrow keys. 16K.
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Timex/Sinclair 1000
Data Acquisition Module
For general purpose measurement 14 channels of analog input; simple interface to Sinclair Basic. Individually software configured channels, allowing any mixture of temperature, voltage, current, resistance, or frequency measurements. Integrating A/D converter allows trade measurement accuracy and noise rejection for conversion time. Maximum resolution: 200 microvolts DC, 0.05 degrees F. English language control over all
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Number Squares
Difficult brain teaser: arrange 81 pieces according to the rules. Billions of possible solutions. Squares moved with arrow keys. 16K.