Desktop Scientific Calculators manufactured by CompuCorp

The Computer Design Corporation of Los Angeles, California, also known as CompuCorp, manufactured a number of desktop scientific and special-function calculators in the early 1970s. Many of these machines were manufactured for the Monroe company, which already had a major distribution and repair system set up throughout the company.

Following are photographs of several machines from the CompuCorp portfolio. Additional information regarding the machines' operation and programming will be added soon.

CompuCorp 122E "Scientist" Scientific Programmable Nixie-Tube Calculator

• Photo of CompuCorp 122E
• Photo of CompuCorp 122E with cover removed
• Photo of one PCB inside the CompuCorp 122E

CompuCorp 140 "Statistician" Scientific/Statistics Nixie-Tube Calculator

• Photo of Compucorp 140
• Close-up of Left side keyboard functions
• Close-up of Right side keyboard functions

CompuCorp 250-1 "Trader" Desktop Nixie-Tube Calculator with Bond Trading functions

• Photo of CompuCorp 250-1
• Close-up of Left side keyboard functions - note that the "-" key is not the original key, which was missing from the calculator.
• Close-up of Right side keyboard functions - note that one key is missing. Some of the other keys may not be in the right place. Please e-mail me if you have any information on the correct key placement.

Monroe 1655 Scientific Programmable Nixie-Tube Calculator

• Photo of Monroe 1655
• Close-up of Left side keyboard functions
• Close-up of Right side keyboard functions
• Close-up of Programming keyboard functions

Monroe 1765 Surveyor Programmable Printing Calculator

• Photo of Monroe 1765
• Close-up of Left side keyboard functions
• Close-up of Right side keyboard functions
• Photo of Monroe 1765 with cover removed