题目内容

When the t0 full count of 8051 timer becomes 0, the overflow flag bit (TF0 of TCON) also becomes 0.

A. 对
B. 错

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the entry address of external interrupt 0 interrupt is 0003h.

A. 对
B. 错

8051 single chip microcomputer allows five interrupt sources to request interrupt, which can be shielded by software, that is, IE is used to control the permission and prohibition of interrupt

A. 对
B. 错

When the system of MCS-51 is reset, the lower four bits of TMOD mode control register are all 0.

A. 对
B. 错

Five interrupt sources of. 8051 MCU have interrupt request input pins on the chip.

A. 对
B. 错

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