operation code

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Noun1.operation code - the portion of a set of operation descriptions that specifies the operation to be performed; the set of operations in a computer
computer code, code - (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions
References in periodicals archive ?
It bears a new front panel featuring a two-line "Message Central" display that reports speed, deflection, operation codes, and error messages.
New operation codes, new keywords, extensions to date related operations, the ability to define various digit fields, arrays or tables as being of type 'date', and support for Julian date type mean substantial advantages to users preparing their applications for the year 2000.

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