4-bit microprocessor introduced in 1974 by Intel
Also known as 4040 microprocessor
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The Intel 4040 ("forty-forty") is the second 4-bit microprocessor designed and manufactured by Intel. Introduced in 1974 as a successor to the Intel 4004, the 4040 was produced with a 10 μm process and includes silicon gate enhancement-load PMOS logic technology. The 4040 contained 3,000 transistors and could execute approximately 62,000 instructions per second.