Microprocessor
In microprocessor based system I/O ports are used to interface

 the O/P devices only
 the I/P device only
 the I/O devices and memory chips
 all the I/O devices

ANSWER DOWNLOAD EXAMIANS APP

Microprocessor
The interrupt facility is provided in microprocessor to

 keep a control on the working of the microprocessor
 stop the microprocessor when it starts malfunctioning
 change the sequence of the instructions being executed
 stop the microprocessor when desired

ANSWER DOWNLOAD EXAMIANS APP