COA Lab
Q1. What is the main role of an I/O interface in a microprocessor system?
a) To perform arithmetic operations
b) To control data transfer between the microprocessor and external devices
c) To store data permanently
d) To manage power supply to the system
Q2. Which signal is typically used by the microprocessor to indicate it wants to read data from an external device?
a) WRITE
b) READY
c) ACK
d) READ
Q3. Which of the following logic gates would be used to ensure data transfer only occurs when both the READ and READY signals are active?
a) OR gate
b) XOR gate
c) AND gate
d) NOT gate
Q4.In a microprocessor I/O interface, what does the ACK signal generally indicate?
a) Data transfer has started
b) The external device is ready to receive data
c) Data transfer is complete
d) The microprocessor is idle
Q5. What is the purpose of clock synchronization in an I/O interface?
a) To increase data storage capacity
b) To ensure accurate timing of data transfer
c) To boost the speed of the microprocessor
d) To convert analog signals to digital
