When 8051 serial port operates in Mode 2, to transmit the ninth bit, it should store into ().
A. SM2 bit of SCON register
B. TB8 bit of SCON register
C. TI bit of SCON register
D. RB8 bit of SCON register
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8051 serial data transmission is initiated by ().
A. setting TI flag
B. placing the data byte in SBUF
C. enabling Timer 1 interrupt
D. enabling Timer 1 running
The 8051 timers in mode 0 will overflow if one more signal comes after the register reaching ().
A. 1FFFH
B. FFFFH
C. FFH
D. FEH
The 8051 has () 16-bit timer/counters.
A. 1
B. 2
C. 3
D. 4
The RI flag is set by serial port hardware at the completion of transmitting a byte. ( )
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