Tandy 2000
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The Tandy 2000 was a computer which used the Intel 80186 microprocessor. By comparison, the IBM PC-XT used the older 8088 processor. Due to the more efficient design of the 80186, the Tandy 2000 ran somewhat faster than other PC compatibles. While touted as being compatible with the IBM XT, the Tandy 2000 was different enough for most software beyond purely text oriented to not work properly. It differed by having a Tandy-specific video mode (640x480, but not related to or forward-compatible with VGA) and keyboard scan codes, and possible other differences. The computer was well supported by Radio Shack in the ensuing years; eventually the remaining unsold computers were converted into the first Radio Shack Terminals (which, oddly enough, had been one of the original backup plans for the original Trs-80 Model 1). The Tandy 2000 was the first computer that Radio Shack put out that lacked the TRS-80 (AKA "Trash-80") name.