Use of data output command-Data input command
Write down the use of data output command, data input command and status command.
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The status command is employed to test many number of status conditions in interface and peripheral.
The data output command causes the interface to respond through transferring data from the bus in one of its registers.
The data input command is opposite of the data output. In this case interface obtains the item of data from peripheral and places it in its buffer register.
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