When the numeric extension unit (NEU) begins its execution, then the signal that is active is
A. BUSY (active high)
B. BUSY (active low)
C. READY (active low)
D. RESET (active high)
Answer:A
When the numeric extension unit (NEU) begins its execution, then the signal that is active is
A. BUSY (active high) B. BUSY (active low) C. READY (active low) D. RESET (active high)
Explanation: When NEU begins its execution, the BUSY signal is pulled up. Also, this output signal when high, indicates to the CPU that it is busy with the execution of an allotted instruction.