| TRS-80 Timeline |
| 8/3/1977 | Radio Shack announces the Level 1 Model I TRS-80 (4KB RAM, 4KB ROM, keyboard, black-and-white video display, and tape cassette), at a price of $599. | ![[Model I]](trs80-1.gif) |
| 8/1978 | Radio Shack announces the Model I Level II, at a price of $1099 | ![[Model I]](trs80-1.gif) |
| 5/1979 | Radio Shack announces the Model II | ![[Model II]](trs80-2.gif) |
| 7/1980 | Radio Shack announces the Model III, at a price of about $699 to $2499 | ![[Model III]](trs80-3.gif) |
| 7/1980 | Radio Shack announces the Color Computer, at a price of about $399 | ![[CoCo]](trs80-co.gif) |
| 7/1980 | Radio Shack announces the Pocket Computer I, at a price of about $229 |
| 1/1981 | Radio Shack ceases production of the Model I due to its failure to comply with FCC Radio Frequency Interference rules | ![[Model I]](trs80-1.gif) |
| 1/1982 | Radio Shack announces the Model 16 | ![[Model 16]](trs80-16.jpg) |
| 1/1982 | Radio Shack announces the Pocket Computer II, at a price of about $279 |
| 3/1983 | Radio Shack announces the Pocket Computer IV |
| 3/1983 | Radio Shack announces the Model 100 (Notebook), at a price of about $799 | ![[Model 100]](trs-100.gif) |
| 5/1983 | Radio Shack announces the Model IV, at a price of about $1,999 | ![[Model IV]](trs80-4.gif) |
| 9/1983 | Radio Shack announces the Model 12 |
| 10/1983 | Radio Shack announces the Model 4P (Portable), at a price of about $1,799 |  |