CASIO AS-80 Japan- 1971 4 functions Desktop |
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"The Casio AS-8 Started it's journey in November of 1971. There were several versions with the generic number AS-A (DX-23AA) It was a standard desktop four function calculator (no Square root on the A model) Using a Flouro Display driven by inverter type buffers (HD3113P) by Hitachi. It used a 24 Pin dual-in-line LSI clocked at 30Khz. Both the keyboard and display grids were scanned/driven by an FD 1009 LSI multiplex driver. The PCB may/may not be designated E3402-1 or something similar. The plus and minus keys served dual rolls. Acting as = keys after a multiplication or division had been engendered." Ray Mackay |
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Courtesy of: Mike Shortville |