Operand

From Academic Kids

In mathematics, an operand is one of the inputs of an operator. For instance, in

3 + 6 = 9

'+' is the operator and '3' and '6' are the operands.

The number of operands of an operator is called its arity. Based on arity, operations are classified as unary, binary etc.


In computer science, the definition of operator is almost the same as in mathematics.

In assembly language, it is a litter bit different from other computer science realm. An operand is a value on which the instruction, named by mnemonic, operates. The operand may be a processor register, a memory address, a literal constant, or a label. A simple example (PC architecture) is

MOV   DS, AX

where the value in register operand 'AX' is to be moved into register 'DS'. Depending on the computer, there may be one, two, or more operands.fr:Opérande sv:operand

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