第五章单元测试
- How many interrupt sources are there in 8051 ? （ ）
- The EA bit in IE register does not actually enable all interrupts, but allows them to be enabled separately. （ ）
- For 8051, each interrupt causes the program to jump directly to an address at which an ISR is located. （ ）
- In an ISR (Interrupt Service Routine), which of the following instructions must be included? （ ）
How many interrupts are enabled after running this instruction “MOV IE, #05h”?
A:4 B:5
C:2 D:3
答案:5
A:错 B:对
A:错 B:对
A:Jump and call instructions
B:ADD instruction C:Return from interrupt instruction
D:Move data instruction
A:
2
0
1
3
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
