This Day in Tech History.
Added 2022-10-07 14:50:57 +0000 UTC
The First Transistor Calculator
October 7, 1954
IBM researchers modify an existing model 604 vacuum tube calculator to use transistors. This experiment didn’t shrink the desk-sized machine nor make it any faster, but it did use only 5% of the power the vacuum tube-based design did. Encouraged by this successful experiment, IBM introduced the first commercial transistor calculator 4 years later, the model 608 (https://thisdayintechhistory.com/).
