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The Heathkit H11 Computer was an early kit-format personal computer introduced in 1978. It was essentially a Digital Equipment PDP-11 in a small-form-factor case, designed by Heathkit. The H11 was one of the first 16-bit personal computers, at a list price of US$1,295,〔 but was too expensive for most Heathkit customers and was discontinued in 1982.〔 ==Specifications== The H11 featured:〔1977 advertising material from Heathkit of Benton Harbor, Michigan.〕 * Processor — LSI-11 (KD11-HA half-size or "double-height" card) * Speed — 2.5 MHz * ROM — 8KB (max) * RAM — 32KB (max) * Slots — 7 Q-bus slots * Storage — H27 8-inch floppy drive (2 256k 8-inch single sided drives) or paper tape * I/O — serial (RS-232) or parallel ports * Operating system — HT-11 (a simplified version of RT-11) * Instruction set — PDP-11/40 instruction set which included over 400 instructions * Languages — BASIC, Focal and others Initial memory limitations restricted the selection of software the system could handle, but the system could be expanded to 32KB of RAM. Many PDP-11 operating systems and programs ran without trouble. The system would also work with most DEC PDP-11 equipment, including many Q-bus compatible peripherals. 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「Heathkit H11」の詳細全文を読む スポンサード リンク
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