Sony SOBAX 400W
Image by 'Mr rf' [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/], via Wikimedia Commons
Sony SOBAX 400W
Distinctive features:
14-digit calculator employing hybrid integrated circuit modules and a delay line memory.
External adapters allowed the calculator to be powered from a battery pack or a car battery.
Technical details:
Capabilities - 4-functions, memory.
Display - 14 digits 'Nixie'-type tubes.
Technology - Uses hybrid integrated circuit modules (comprising discrete transistors and other components encapsulated on tiny circuit boards). Delay line memory.
Made in the Japan. Launched in about 1969.
Significance:
Sony produced a number of high quality desktop calculators from the mid 1960s to the early 1970s, when they became uncompetitive.
The 14 'Nixie'-type tubes of the display.
Image by 'Mr rf' [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/], via Wikimedia Commons
The circuit boards are exposed when the rear is removed. The orange components on the boards are hybrid integrated circuit modules.
Image by 'Mr rf' [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/], via Wikimedia Commons
Close up of one of the circuit boards. The orange components are hybrid integrated circuit modules.
Image by 'Mr rf' [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/], via Wikimedia Commons
There is more information about Sony's venture in the electronic calculator market in the Calculator Companies section of this site.
Electronic Desk
Calculators
Vintage Calculators
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.