Question: Mode 0 is the basic input / output mode. In this mode, the 8 2 5 5 can be used as an 8 - bit

Mode 0 is the basic input/output mode. In this mode, the 8255 can be used as an 8-bit input or output device, with each of the three ports (Port A, Port B, and Port C) being configured individually as input or output.

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