Vidyalelo
ECE · Q157

Microprocessors And Microcontrollers

Engineering and GATE · ECE · question 157

Q157

In mode 0, Interrupt on terminal count of 8253, if the gate pin is made low while counter is decrementing, which one of the following operations will follow?

A.
Counter stops and cleared to '0' and starts decrementing when gate pin is made high
B.
Counter stops and thereafter it increments till gate pin = '1' high
C.
Counter stops, the current contents are held and the decrement operation resume only after gate pin is made high
Answer
D.
Counter stops, the current contents are held for one clock cycle and the decrement operation resume

Answer: Option C

Solution

Answer: Option C
No explanation is given for this question Let's Discuss on Board