Intel 4004

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The Intel 4004 is an early single chip computer chip, from 1971, and a lineal ancestor of the Pentium microprocessor.[1][2]

intel 4004 specifications
specification value
number of transistors 2,300 transistor on die[1][2]
clock speed 108 hertz[2], 740 hertz[1]
bus speed 108 hertz[2]
instruction set 46 instructions[1]
Registers 16 4 bit registers or eight bit registers.[1]
introduction date November 1971[2]
memory 1k data memory, 4k program memory[1]
address space 4k[1]
transistor size 10 micron[2]

The computer had separate data and memory spaces. The maximum addressable memory was 4 kilobytes.[1]

According to the History of Computing website the chip "it is widely considered to be the world's first commercial single-chip microprocessor."[1]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 The Industrial Era: 1970 - 1971, History of Computing. Retrieved on 2008-04-15. “In February Intel releases the 4004 microprocessor to the market. It has 12 sq mm die size and 16 pins which fit in to a motherboard.”
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Microprocessor quick reference guide: Intel486™ Processors and Earlier, Intel Museum. Retrieved on 2012-06-06.