Lets see a piece on the TRS-80. This and the Apple were the most powerful and successful PCs on the market for many years. Though not as slick as the Apple machine The TRS offered more value, had more third-party support and, I think, more open software. As a Z80 machine it taught lots of people coding with the 8080-ish instruction set, so they hit the ground running on the IBM PC. I wrote a teletype driver in hex, which taught me the value of an assembler... along with designing a custom hardware interface board to connect the TTY to the TRS. Those were the days of getting a 100% OC by changing two pins on a J-K flip-flop. So I laugh at the measly 20% OCs the kids brag about now... crikey.