题目内容

The vector address of external interrupt source INT1 is ()

A. 0003H
B. 000BH
C. 0013H
D. 002BH

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When the external interrupt 0 sends an interrupt request, the interrupt response condition is().

A. SETB ET0
B. SETB EX0
C. MOV IE,
D. 81H
E. MOV IE,
F. 61H

Interrupt is a kind of ()

A. Resource sharing technology
B. Data conversion technology
C. Data sharing technology
D. Parallel processing technology

When MCS-51 single chip microcomputer applies for interrupt from the same priority interrupt source at the same time, CPU responds first.

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

The interrupt request flag of external interrupt 1 of MCS-51 is ()

A. ET1
B. TF1
C. IT1
D. IE1

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