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4040 - Intel
< intel‎ | mcs-40

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Intel D4040 2293B top.jpg
General Info
Model Number4040
Part NumberC4040, D4040, P4040
Introduction1974 (launched)
General Specs
Frequency740 kHz
Process10 μm
Word Size4 bit
Max Memory8 KiB
Power dissipation630 mW

The Intel 4040 (i4040) is a 4-bit microprocessor introduced in 1974 by Intel as a successor to the Intel 4004. The 4040, fabricated using pMOST technology, introduced a small set of additional instructions, a larger call stack, a larger register file, and interrupt capabilities. The package size was also increased to 24 pins. The 4040 is part of the Intel MCS-40 chipset.

The Intel 4040 was used in a large number of early video games and gaming machines such as the Bailey shuffleboard.


Following the success of the Intel 4004, Intel released the 4040, an enhanced version. The new chip included a much larger stack (7 levels instead of 4). The 4040 also introduced interrupt support. 14 new instructions were added and the register file was increased to 24 index registers.

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Facts about "4040 - Intel"
base frequency0.74 MHz (7.4e-4 GHz, 740 kHz) +
core count1 +
designerIntel +
familyMCS-40 +
first launched1974 +
full page nameintel/mcs-40/4040 +
instance ofmicroprocessor +
ldate1974 +
main imageFile:Intel D4040 2293B top.jpg +
main image captionD4040 +
manufacturerIntel +
max memory0.00781 MiB (8 KiB, 8,192 B, 7.629395e-6 GiB, 7.450581e-9 TiB) +
model number4040 +
name4040 +
part numberC4040 +, D4040 + and P4040 +
power dissipation0.63 W (630 mW, 8.4483e-4 hp, 6.3e-4 kW) +
process10,000 nm (10 μm, 0.01 mm) +
transistor count3,000 +
word size4 bit (0.5 octets, 1 nibbles) +