In 8254 there are ________ pins

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• The 8254 contains __________ counters
• The functions of Pins from 24 to 31 depend on the mode in which _______ is operating
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• In a minimum mode there is a ___________ on the system bus
• In 8255A, there are _________ I/o lines
• There are ________ address bus in 8255A
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