Intel 80186
The Intel 80186, also known as the iAPX 186, or just 186, is a microprocessor and microcontroller introduced in 1982. It is based on the Intel 8086 and, like it, has a 16-bit external data bus multiplexed with a 20-bit address bus. The 80188 is a variant with an 8-bit external data bus.
Source: Wikipedia
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