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A. Wear your earphones wherever you go.
B. Follow the fashion of wearing earplugs.
C. Wear earplugs in case of high-volume sounds.
D. Buy expensive earplugs to protect your hearing.

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When the serial port of AT89S51 extends the parallel I / O port, the working mode of the serial interface is selected.

A. Mode 0
B. Mode 1
C. Mode 2
D. Mode 3

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The register that controls the working mode of the serial port is.

A. TCON
B. PCON
C. TMOD
D. SCON

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When the serial port of 8051 single chip microcomputer is in working mode 0, ().

A. The data is input from RDX and output from TXD
B. The data is output from RDX and input from TXD
C. The data is input or output from RDX, and the synchronization signal is output from TXD
D. The data is input or output from TXD, and the synchronous signal is output from RXD

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When MCS-51 is used to expand parallel I / O port, the working mode of serial interface is selected ()

A. Mode 0
B. Mode 1
C. Mode 2
D. Mode 3

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[音频]

A. Wear your earphones wherever you go. B. Follow the fashion of wearing earplugs. C. Wear earplugs in case of high-volume sounds. D. Buy expensive earplugs to protect your hearing.

When the serial port of AT89S51 extends the parallel I / O port, the working mode of the serial interface is selected.

The register that controls the working mode of the serial port is.

When the serial port of 8051 single chip microcomputer is in working mode 0, ().

When MCS-51 is used to expand parallel I / O port, the working mode of serial interface is selected ()

A. Wear your earphones wherever you go.
B. Follow the fashion of wearing earplugs.
C. Wear earplugs in case of high-volume sounds.
D. Buy expensive earplugs to protect your hearing.