题目内容

If ()=D6H, ()=0, the contents of A after execution of instruction “RLC A” will be ( )

ACH
B. CAH
C. ADH
DAH

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If ()=20FFH, the contents of DPH after execution of instruction “INC DPTR” will be ( )

A. 20H
B. 21H
C. 00H
D. FFH

Bit-addressable locations of the 8051 include( )

A. 16 internal RAM bytes
B. majority of SFRs
C. I/O ports
D. all of the candidates

The 8051 has bit-level instructions for ( )

AND
B. OR
C. complement
D. all of the candidates

Which of the following SFRs is bit-addressable? ( )

A. DPH
B. DPL
C. B
D. TMOD