题目内容

Instruction “INC DPTR” is a valid 8051 instruction. ( )

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Instruction “MOV F0, ACC.3” is a valid 8051 instruction. ( )

()=FEH, ()=1. The contents of A after execution of instruction “RR A” will be,( )

A. FCH
B. 7FH
C. F1H
D. FDH

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

ACH
B. CAH
C. ADH
DAH

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

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