题目内容
MOV 10H, 20H is ( )byte instruction.
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The special function registers can be referred to by their hex addresses or by their register names. ( )
Instruction “MOV C, 30H” is a valid 8051 instruction. ( )
In register indirect addressing, only register R0 and R1 are available for use to hold the address of the data. ( )
8051 does not provide the instruction for subtraction without borrow. ( )
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