题目内容

When the timer T0 and T1 work in mode 1, the counter is () bit.

A. 8
B. 16 bit
C. 14
D. 13

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When the gate of the timers t0 and T1 is 1, the condition of whether the counter counts or not is selected.

A. Depending on TRX status only
B. Depends only on gate bit state
C. It is controlled by TRX and two conditions
D. Only depending on the state of the

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When timer T2 works in auto reload mode, its counter is () bit.

A. 8
B. 13
C. 14
D. 16 bit

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In order to measure the width of the positive single pulse on the pin, the content of the special function register TMOD should be ().

A. 87H
B. 09H
C. 80H
D. 00H

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When timer T1 of 8051 single chip microcomputer is used as timing mode, it is.

A. Timing by internal clock frequency, one clock cycle plus 1
B. Fixed by the internal clock frequency, a machine cycle plus 1
C. Timing by external clock frequency, one clock cycle plus 1
D. By external clock frequency timing, a machine cycle plus 1

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When the timer T0 and T1 work in mode 1, the counter is () bit.

A. 8 B. 16 bit C. 14 D. 13

When the gate of the timers t0 and T1 is 1, the condition of whether the counter counts or not is selected.

When timer T2 works in auto reload mode, its counter is () bit.

In order to measure the width of the positive single pulse on the pin, the content of the special function register TMOD should be ().

When timer T1 of 8051 single chip microcomputer is used as timing mode, it is.

A. 8
B. 16 bit
C. 14
D. 13