Texas Instruments announces the Regency TR-1, the first mass-produced transistor radio.

Regency TR-1

1954 commercial transistor radio

The Regency TR-1 was the first commercially manufactured transistor radio, introduced in 1954. Despite mediocre performance, about 150,000 units were sold, due to the novelty of its small size and portability. Previously, transistors had only been used in military or industrial…