TRS-80 (also affectionately or derisively known as the "Trash-80") was Tandy Corporation's desktop microcomputer model line, and sold through Tandy's RadioShack stores, in the late-1970s and 1980s. Hobbyists, home users, and small-businesses were the intended consumers. (From Wikipedia)
The TRS-80 model 1 features early in the history of Interactive Fiction. Adventureland by Scott Adams, the first adventure for microcomputers was published on the TRS-80 model 1 in 1978. The first microcomputer version of Zork was also published for the model 1, in 1980, requiring a floppy drive plus 32K of memory.