TRS-80 Model I

TRS-80 was Tandy Corporation's desktop microcomputer model line, sold through Tandy's Radio Shack stores in the late 1970s and early 1980s. The Model I was the first release in the TRS-80 line.

Radio Shack announced the Model I at a New York City press conference on August 3, 1977. TRS stood for Tandy Radio Shack. The TRS-80 Model I cost $399, or $599 with a 12" monitor and a Radio Shack tape recorder as datacassette storage; before it, the most expensive product Radio Shack sold was a $500 stereo.

The first units, ordered unseen, were delivered in November 1977, and rolled out to the stores the third week of December.

Source: Wikipedia, "TRS-80", available under the CC-BY-SA License.