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The 3B1 (also known as the PC7300, or Unix PC) was a Unix workstation computer originally developed by Convergent Technologies (later acquired by Unisys), and marketed by AT&T in the mid- to late-1980s. Despite the name, the 3B1 had little in common with AT&T's other 3B-series computers. ==Hardware configuration== * 10 MHz Motorola MC68010 (16 bit external bus, 32 bit internal) with custom, discrete MMU * Internal MFM hard drive, originally 5 MB, later models with up to 67 MB * At least 512K RAM on main board, expandable via expansion cards * 3 expansion slots * Monochrome green phosphor monitor * Internal 300/1200 bit/s modem 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「AT&T Unix PC」の詳細全文を読む スポンサード リンク
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