If like us, you missed out on the TRS-80 Model I back when it first came out, relax .With this brand-new PCB that’s a trace-for-trace replica of the original and a bunch of vintage parts, you can ...

When the TRS-80 — a personal computer from Tandy that would be sold via their RadioShack stores, hence TRS — went on sale on Aug. 3 in 1977, computers weren’t exactly new. The Apple I had been ...

This manual describes the hardware associated with the TRS-80 RS-232-C Interface. The manual differs from 1983.0169.09, although both contain program listings relating to having the microcomputer ...

For over half a century, if you wanted to buy electronics parts and gadgets in the United States, one retail chain loomed large above all others: RadioShack. Its combination of distinctive, often ...

The TRS-80 Model 100 was released in 1983, featuring an 80C85 CPU that can run at 5 MHz, but only runs at a hair under 2.5 MHz, due to 1:2 divider on the input clock. Why cut the speed in half? It has ...