Intel 8080
The intel 8080 is an eight-bit microprocessor designed and manufactured by intel in the mid 1970s.[1]
| specification | value |
|---|---|
| number of transistors | 6,000 transistor on die |
| clock speed | 2 megahertz |
| instruction set | 75 instructions |
| Registers | seven eight bit registers.[2] |
| introduction date | January 4, 1974 |
| initial cost | $360 each |
Like rival microprocessors like the motorola 6800 the intel 8080 used registers that were only eight bits wide.
Zilog later produced a pin compatible replacement, the z80, with some extended features.
The Altair, Imsai and Tandy Radio Shack TRS80 microcomputer was built around the intel 8080.[3]
The 8080 is the lineal ancestor of intel's later designs, the 8080, 8086, 186, 286, 386, 486 and all of intel's Pentium processors.[2] The 8080 was the lineal descendant of the [[intel 4004] and intel 8008 microprocessors.[3]
Later chips, like the intel 8052, incorporated the intel 8080 architecture, memory, and what had previously been various support chips on a single chip, allowing a "computer on a chip".[1] The 8052 was embedded in non-computer devices, like microwave ovens, and electronic fuel ignitions.
References
- ↑ 1.0 1.1 The Industrial Era: 1974 - 1975, History of Computing. Retrieved on 2008-04-15.
- ↑ 2.0 2.1 A Brief Summary of the first 20 years of Microprocessor Evolution (1971 -1993), University of Bolton. Retrieved on 2008-03-01.
- ↑ 3.0 3.1 Microprocessor hall of fame, Intel Museum. Retrieved on 2008-04-15.