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
A: Input from T1 (p3.5)
B: Provided by internal clock frequency
C: Input from t0 (p3.4)
D: Counting by external counting pulse
A
举一反三
- When the 74LS90 chip QA is connected to INPUT B and the counting pulse is input from INPUT A, which counting system does the chip employ? () A: Binary system B: Quinary system C: Decimal system D: Septenary system
- The counting mode is to count the external pulse of P0 port
- The instruction to stop counting the timer T1 of 8051 is to stop counting the timer T1 of TCON. A: TF0 position 1 B: Tr0 position 1 C: Tr0 position 0 D: Tr1 position 0
- Both timer T0 and T1 can only work in 16-bit counting mode
- The counting mode is to count the external pulse of P0 port A: 正确 B: 错误
内容
- 0
Both timer T0 and T1 can only work in 16-bit counting mode A: 正确 B: 错误
- 1
People start “counting nine” from _________.
- 2
Under the working mode 1, both counting and timing can be carried out.
- 3
Under the working mode 1, both counting and timing can be carried out. A: 正确 B: 错误
- 4
We are all _________ winning this contract. A: giving in B: counting in C: giving away D: counting on