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The Tandy 2000 was a personal computer introduced by Radio Shack in late 1983 which used the 8 MHz Intel 80186 microprocessor. By comparison, the IBM PC XT (introduced in March 1983) used the older 4.7 MHz 8088 processor, and the IBM PC AT (introduced in 1984) would later use the newer 6 MHz Intel 80286. Due to the more efficient design of the 80186, the Tandy 2000 ran significantly faster than other PC compatibles on the market, and slightly faster than the PC AT. (Later, IBM upgraded the 80286 in new PC AT models to 8 MHz.) While touted as being compatible with the IBM XT, the Tandy 2000 was different enough that most software that was not purely text-oriented did not work properly. It differed by having a Tandy-specific video mode (640×400, not related to or forward-compatible with the 1987 VGA standard), keyboard scan codes, and other differences. The computer was poorly supported by Radio Shack in the following years; eventually the remaining unsold computers were converted into the first Radio Shack Terminals (which coincidentally had been one of the backup plans for the original TRS-80 Model I). The Tandy 2000 had both the "Tandy" and "TRS-80" logos on its case, marking the beginning of the phaseout of the "TRS-80" brand. == Specifications == *8 MHz Intel 80186 *128KB RAM (expandable to 768KB, of which up to 256KB was located on the motherboard, or up to a maximum of 896KB with motherboard and ROM modifications) *1 or 2 720KB 5¼" floppy drives *10MB MFM full-height hard drive (upgradable to two 32MB half-height drives, or two 80MB drives with ROM modifications and third-party low-level formatting software) *Proprietary parallel printer port (requires adapter cable to connect to a Centronics-port printer) *Proprietary serial port *4? card slots on the back could accept expansion boards without the need to open the case *256KB RAM card (up to 2 could be added for 768KB total; each card had two 128KB banks of nine 16KB RAM chips) *Color Graphics Card *Mouse/Clock Card *Hard disk card with two ribbon cables to an outboard 10MB hard drive *Network Card (BNC) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tandy 2000」の詳細全文を読む スポンサード リンク
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