Japan- 1971

4 functions

"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

Courtesy of: Mike Shortville

X-Number World of Calculators