超星 - 第五章作业1--单片机的定时器/计数器

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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单选题

When the timer T0 of 8051 single chip microcomputer is used as counting 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
Counting by external counting pulse, falling edge plus 1
D. Counting by external counting pulse, one machine cycle plus 1

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单选题

The timer T1 of 8051 single chip microcomputer is used as counting mode, and the counting pulse is.

A. Input from T1 (p3.5)
B. Provided by internal clock frequency
C. Input from t0 (p3.4)
D. Counting by external counting pulse

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单选题

When the timer T1 of 8051 is used as timing mode and mode 1 is used, the control word of working mode is ().

A. 01H
B. 05H
C. 10H
D. 50H

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