Instruction
“MOV C, 30H” is a valid 8051 instruction. ( )
“MOV C, 30H” is a valid 8051 instruction. ( )
正确
举一反三
- Instruction<br/>“POP A” is a valid 8051 instruction. (<br/>)
- Instruction<br/>“PUSH B” is a valid 8051 instruction. (<br/>)
- ____: An instruction sequence in programmed instruction.
- 8051<br/>does not provide the instruction for subtraction without borrow. (<br/>)
- ()=F0H,<br/>(R0)=30H, and (30H)=AAH. After execution of an instruction XCH A,<br/>@R0, accumulator will be,( ) A: AAH B: F0H C: 30H D: 78H
内容
- 0
()=F0H,<br/>(R0)=30H, and (30H)=AAH. After execution of an instruction “XCH<br/>A, @R0”, the contents of A will be( ) A: AAH B: F0H C: 30H D: 78H
- 1
There is a subi instruction in MIPS instruction set.
- 2
下列完成8051单片机片外数据传送的指令是(<br/>)()。 A: MOV<br/>A,@R0 B: MOVC<br/>A, @A+PC C: MOVX<br/>A,@DPTR D: MOV<br/>20H,30H
- 3
已知：(30H)=23H，(31H)=13H，(40H)=72H，(41H)=08H 执行： MOV A，30H ADD A，40H DA A MOV 30H，A MOV A，31H ADDC A，41H DA A MOV 31H，A 则结果为：(30H)=______H，(31H)=______H，(40H)=______H，(CY)=______。
- 4
When an instruction is executed the address of the next instruction is put into the PC. （ ）