题目内容

Which register bank is selected by default after system reset? ( )

A. bank 0
B. bank 1
C. bank 2
D. bank 3

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更多问题

Bit-addressable internal RAM has address range of ( )

A. 10H to 1FH
B. 20H to 2FH
C. 30H to 3FH
D. 40H to 4FH

In the 8051, SP is () wide register. ( )

A. 8 byte
B. 8 bit
C. 16 bit
D. 32 bit

What is the address range of SFRs in the 8051 ( )

A. 00H-7FH
B. 20H-2FH
C. 30H-7FH
D. 80H-FFH

下面哪条指令能够将R0所指向的数据存储器地址内存放的数据内容复制到端口P3? ( )

A. MOV @P3, R0
B. MOV @R0, P3
C. MOV P3, @R0
D. MOV P3, R0