In July 1980, Tandy released the TRS-80 Model III. The improvements of the Model III over the Model I included: built-in lowercase, a better keyboard with repeating keys, an enhanced character set, a real-time clock, 1500-baud cassette interface, a faster (2.03 MHz) Z-80 processor, and elimination of the cable spaghetti (due to its all-in-one enclosure). Furthermore, a Model III with two floppy drives required the use of only one electrical outlet (a two-drive Model I required five outlets: one each for the CPU/keyboard, Expansion Interface, Video Monitor, and the drives).
| Manufacturer | Tandy / Radio Shack | CPU | Zilog Z80 @ 2.03 MHz |
| Year Introduced | 1980 | RAM | 16KB, 32KB or 64KB |
| Introductory Price | $999 (16KB Level III) $1,995 (48KB, one floppy) | Storage | Cassette Optional 5.25" floppy disks (178KB) |
■ 1980 / Tandy / Radio Shack / Last Updated May 24, 2017 by Curator /