Bit-addressable locations of the 8051 include( )
A. 16 internal RAM bytes
B. majority of SFRs
C. I/O ports
D. 16 internal RAM bytes, I/O ports and majority of SFRs
查看答案
The 8051 has bit-level instructions for ( )
AND
B. OR
C. complement
D. AND, OR and complement
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