Busicom 100DA
Busicom 100DA.
Display is 10 digits, amber gas-discharge.
AC power supply.
4-function.
Integrated circuit - Texas Instruments TMS0106NC, here date coded to mid-1972.
185 x 238 x 65 mm. (7.3" x 9.4" x 2.5").
Made in Japan, by Nippon Calculating Machine Corp. (aka Busicom).
This calculator was made by the Japanese Busicom company before it went out of business.
Inside, showing the gas-discharge display, the Texas Instruments integrated circuit, and some of the 32 transistors.
Busicom models
Vintage British Calculators
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.