Texas Instruments CAL TECH
The Texas Instruments CAL TECH is an arithmetic calculator with algebraic logic. It has 4 functions, 18 keys, and a printer. The calculator was manufactured in USA. Note: Prototype. First pocket calculator, was never marketed. Output by means of paper tape printer.
Facts at a glance:
If you have a Texas Instruments CAL TECH that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: