Intel 8051
Intel 8051. Another family of microcontroller is the Intel 8051 family. The basic 8051 microcontroller has four parallel input/output ports, port 0, 1, 2 and 3. The 8051AH version has 4K x 8 bytes ROM , 128 x 8 bytes RAM, two 16-bit timers and interrupt control for five interrupt sources.
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