Hewlett Packard HP 9810A programmable desktop calculator, 1971.
Hewlett-Packard 9810A programmable desktop calculator, with file of program cards HP
Hewlett-Packard 9810A programmable desktop calculator, with file of program cards. This was the second calculator made by Hewlett Packard and was launched as an easy upgrade from its predecessor, the HP 9100. The calculator made use of technological advances, including IC chips for RAM (random-access memory), ROM (read-only-memory) and logic, as well as a three-line LED (light-emitting diode) display instead of the cathode ray tube (CRT) display used on the HP 9100.
- Computing & Data Processing
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- British Coal Opencast
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