题目内容

The 8051 has bit-level instructions for ( )

AND
B. OR
C. complement
D. AND, OR and complement

查看答案

搜索结果不匹配？点我反馈

更多问题

Which of the following instruction is not a bit-processing instruction? ( )

A. CLR C
B. CLR A
CPL 10H
D. CLR 20H

The contents of RAM location 20H and CY are FFH and 1. After execution of following 3 instructions “ANL C, 00H”, “CPL C” and “MOV 00H, C” the contents of internal RAM address 20H will be ( )

A. 00H
B. 01H
C. FFH
D. FEH

An alternate instruction for “CLR C” is ( )

A. CLR PSW.0
B. CLR PSW.7
CLR PSW.2
D. CLR PSW.1

The contents of accumulator and CY are D6H and 0 respectively. After execution of instruction “RLC A”, the contents of A will be ( )

ACH
B. CAH
C. ADH
DAH