Uncommon
8-bit computing
Computer architecture bit width
8-bit computing
In computer architecture, 8-bit integers or other data units are those that are eight bits wide (one octet). Also, 8-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers of that size or data buses of that width. Memory addresses (and thus address buses) for 8-bit CPUs are generally larger than 8-bit, usually sixteen-bit. 8-bit microcomputers are microcomputers that use 8-bit microprocessors. The term 8-bit is also applied to the character sets that could be used on computers with 8-bit bytes, the best known being various forms of extended ASCII, including the ISO/IEC 8859 series of national character sets – especially Latin 1 for English and Western European languages. The IBM System/360 introduced byte-addressable memory with 8-bit bytes, as opposed to bit-addressable or decimal digit-addressable or word-addressable memory, although its general-purpose registers were 32 bits wide, and addresses were contained in the lower...
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