1980 TRS-80 (Trash 80) Model III. 16K, cassette recorder, no disk drive. I was 11 years old. I talked my parents into it after playing with a Model I at summer camp. Compuserve was a dial-up service that had live chat rooms and very limited games. I think it became Netscape.
A couple years later I had it upgraded to 32K, for about $150!
Model III
As a follow on to the Model I, in July 1980 Tandy released the Model III, a more integrated and much improved Model I. The improvements of the Model III included built-in lower case, a better keyboard, and a faster (2.03 MHz) Z-80 processor. With the introduction of the Model III, Model I production was eventually discontinued as the Model I's did not comply with new FCC regulations regarding radio interference. In fact, the Model I's radiated so much RFI (Radio Frequency Interference) that many game companies made their games so you could put an AM radio next to the computer and use the interference to get sounds. The TRS-80 Model III also came with the option of integrated disk drives.