Intel 8008 and Intel 8080

Intel 8008

The Intel 8008 is the world's first 8 bit microprocessor, which would perform arithmetic and logic operations on 8 bit words, was introduced in April 1972³. It was an 8-bit CPU with an external 14-bit address bus that could address 16KB of memory. With 8 bits to work with, the microprocessor could expand beyond the realms of calculator-like functionality. The developers of Intel 8008 were Ted Hoff, Stan Mazor, Hal Feeney, and Federico Faggin. This chip was the centre of what some consider to be the world's first 'home computer': the Mark-8, designed by Jon Titus. This chip was basically used in dumb-terminals and general calculators. Major companies using this chip for there calculators were Texas Instruments and Seiko. Later on, the 8008 became the CPU for the very first commercial, non-calculator personal computers: the US SCELBI kit and the pre-built French Micral N and Canadian MCM/70.

Intel 8080

The Intel 8080 is an early 8-bit microprocessor, released in April 1974⁴ running at 2 MHz, and is generally considered to be "the first truly usable microprocessor" CPU design. It is the successor to the Intel 8008. The Intel 8080 was designed by Federico Faggin, Masatoshi Shima and Stan Mazor . The architecture of the 8080 strongly influenced Intel's 8086 CPU architecture, which gave rise to the x86 family of processors. The 8080 was used in many early microcomputers, such as the MITS Altair 8800 Computer(one of the first build-it-yourself PCs, and early cruise missiles), Processor Technology SOL-20 Terminal Computer and IMSAI 8080 Microcomputer. The basic architecture of the 8080 and its successors has replaced many proprietary midrange and mainframe computers, and withstood challenges of technologies such as RISC.

Tech Specs

Specifications \ Name 1 2	Intel 8008	Intel 8080
Technology	PMOS	NMOS
CPU clock rate	0.5 MHz	2 MHz
MIPS	0.05	0.29
Addressable Memory	16 KB	64 KB
Transistors	3,500, 10 μm	4,500, 6 μm
Packages	18 pins DIP	40 pins DIP