Q.Briefly explain Data transfer instruction.
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Data-transfer instructions copy data between registers, RAM and the accumulator without altering the data itself.
Data-transfer (data-movement) instructions are the group of 8051 instructions that shift data from one place to another — between registers, internal/external RAM and the accumulator — leaving the value unchanged and the source intact. Common examples are MOV (move within internal memory/registers), MOVX (transfer to/from external data memory), MOVC (read from program/code memory) and PUSH/POP (save to and retrieve from the stack). They form the backbone of every program, because data must be positioned correctly before arithmetic or logic can act on it. …
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