4004
MCS-4 Family
Worlds first processor to be etched into a single piece of
silicon.
(4004 die core)
Introduction date: | November 15, 1971 | |
Category: | 4-bit microprocessor (8-bit instructions) | |
Frequency: | 500KHz - 740KHz | |
Technology: | P-channel silicon gate MOS technology | |
Number of transistors: | 2,300 (10 microns) | |
Addressable memory: | 4096x8-bit ROM and 1280x4-bit RAM | |
Number of instructions: | 45 with a 4 level stack and sixteen 4-bit (or eight 8-bit) registers | |
History: |
In 1969 Busicom asked Intel to design a
set of chips to be used in a new high perfomance calculator. Ted Hoff, Federico Faggin and Stan Mazor came up with a design that involved a central processing unit, 4004 (CPU) a read-only memory, 4001 (ROM) a random access memory, 4002 (RAM) and a shift register, 4003 (I/O). The CPU was eventually to be called a microprocessor. Later Intel negotiated for a return of the rights for the chips, wish had gone to Busicom in the original contract. Please see MCS-4 section for more info on chipset. |
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Second source: | National Semiconductors was the only second source to Intel 4004. |
National Semiconductor | |||||
INS4004D | |||||
7728 |
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INS4004J | |||||
7946 |
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Pin configuration |