Acht-Bits
id:
2124027
| In computer architecture, 8-bit integers, memory addresses, or other data units are those that are at most 8 bits (1 octet) wide. Also, 8-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. Eight-bit CPUs normally use an 8-bit data bus and a 16-bit address bus which means that their address space is limited to 64 kilobytes. This is not a "natural law", however, so there are exceptions. The first widely adopted 8-bit microprocessor was the Intel 8080, being used in many hobbyist computers of the late 1970s and early 1980s, often running the CP/M operating system. The Zilog Z80 (compatible with the 8080) and the Motorola 6800 were also used in similar computers. The Z80 and the MOS Technology 6502 8-bit CPUs were widely used in home computers and game consoles of the 70s and 80s. Many 8-bit CPUs or microcontrollers are the basis of today's ubiquitous embedded systems. There are 28 (256) possible permutations for 8 bits. About 55% of all CPUs sold in the world are 8-bit microcontrollers or microprocessors. List of 8-bit CPUs A CPU can be classified on the basis of the data it can access in a single operation. An 8-bit processor can access 8 bits of data in a single operation. A 16-bit processor can access 16 bits of data in a single operation. 8-bit Intel CPUs Intel 8008 Intel 8051 Intel 8080 Intel 8085 Intel 8088 *NOTE: Intel 8088 is 8-bit externally only Intel 80188 *NOTE: Intel 8088 is 8-bit externally only List of competitor compatible CPUs to Intel 8-bit architecture Zilog Z80 Zilog Z800 8-bit Motorola CPUs see main article: 68h Motorola 6800 List of competitor CPUs similar to Motorola 8-bit architecture MOS Technology 6501 MOS Technology 6502 MOS Technology 6510 |