Tradic (English abbreviation for Transistorized Airborne DIgital Computer ) was the world's first computer based on transistors - and headed for his faults and reliability and the higher speed of transistors over tubes and not least because of its smaller size so that the triumph of computer transistor- one compared to the usual at that time tube computers. Tradic managed a million logic operations per second.

Developed by Bell Research Laboratories for the United States Air Force, he was completed on 19 March 1955. It consisted of about 10,000 germanium diodes and transistors 700-800 and had a power consumption of about 100 watts.

There are different details about the start of development of Tradic and TX -0. Some sources speak of 1953 for both computers. Probably the Tradic was but the first completely computer -based transistors.