operation code

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Noun

operation code - the portion of a set of operation descriptions that specifies the operation to be performed; the set of operations in a computerorder codecomputer code, code - (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions

operation code

[‚äp·ə′rā·shən ‚kōd] (computer science) A field or portion of a digital computer instruction that indicates which action is to be performed by the computer. Also known as command code.

operation code

(programming)(Or "op code") The part or parts of a machine language instruction which determines what kind of action thecomputer should take, e.g. add, jump, load, store. In anyparticular instruction set certain fixed bit positionswithin the instruction word contain the op code, others giveparameters such as the addresses or registers involved.For example, in a 32-bit instruction the most significanteight bits might be the op code giving 256 possibleoperations.

For some instruction sets, certain values in the fixed bitpositions may select a group of operations and the exactoperation may depend on other bits within instruction word orsubsequent words.

When programming in assembly language, the op code isrepresented by a readable name called an instruction mnemonic.

operation code

The part of a machine instruction that tells the computer what to do, such as input, add or branch. The operation code is the verb; the operands are the nouns.

operation code

operation code

operation code

operation code

operation code

operation code

Synonyms for operation code

noun the portion of a set of operation descriptions that specifies the operation to be performed

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