题目内容

When the CPU responds to the interrupt request of external interrupt 0 INT0, the content of program counter PC is().

A. 0003H
B. 000BH
C. 00013H
D. 001BH

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When the CPU responds to the interrupt request of external interrupt 1 INT1, the content of program counter PC is().

A. 0003H
B. 000BH
C. 00013H
D. 001BH

In the same level, except for serial port, the lowest level interrupt source of MCS-51 single chip microcomputer is ().

A. External interrupt 1
B. Timer T0
C. Timer T1
D. Serial port

In the same level, except INT0, the interrupt source with the highest level is ().

A. External interrupt 1
B. Timer T0
C. Timer T1
D. External interrupt 0

When the timer T0 sends an interrupt request, the interrupt response condition is().

A. SETB ET0
B. SETB EX0
C. MOV IE,
D. 82H
E. MOV IE,
F. 61H

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