When port A is used as input, Port B and Port C are used as output, the control word of 8255 is (a) 80H (b) 90H (c) 85H (d) 86H Which pin is used to control the output of counters 2 of 8253 in mode...

When port A is used as input, Port B and Port C are used as output, the control word of 8255 is

(a) 80H (b) 90H (c) 85H (d) 86H

Which pin is used to control the output of counters 2 of 8253 in mode 2?