The external interrupts of 8051 can be enabled by
A. 4 LSBs of TCON register
B. Interrupt enable
C. priority register
D. all of the mentioned
Answer:A
The external interrupts of 8051 can be enabled by
A. 4 LSBs of TCON register B. Interrupt enable C. priority register D. all of the mentioned
Explanation: The external interrupts namely INT0(active low) and INT1(active low) can be enabled and programmed using the least significant four bits of TCON register and the Interrupt enable and priority registers.