Browse Definitions :
Definition

operation

An operation, in mathematics and computer science, is an action that is carried out to accomplish a given task. There are five basic types of computer operations: Inputting, processing, outputting, storing, and controlling.

Although even basic computers are capable of sophisticated processing, processors themselves are only capable of performing simple mathematical operations. CPUs perform very complex tasks by executing billions of individual operations per second.

When we think of computer operations, we’re usually thinking of those involved in processing. The arithmetic-logic unit (ALU) in the processor performs arithmetic and logic operations on the operands according to instructions that specify each step that must be taken to make the software do something. 

The arithmetic operations are addition, subtraction, multiplication, and division.  There are sixteen possible logic (or symbolic) operators used to perform tasks such as comparing two operands and detecting where bits don’t match. Boolean operators, which work with true/false values, include AND, OR, NOT (or AND NOT) and NEAR. Relational operators, used for comparisons, include the equal sign (=), the less-than symbol (<) and the greater-than symbol (>).

The ALU usually has direct input and output access to the processor controller, main memory RAM and input/output devices. Inputs and outputs flow through the system bus. The input consists of an instruction word that contains an operation code, one or more operands and sometimes a format code. 

This was last updated in October 2017

Continue Reading About operation

SearchCompliance
  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

SearchSecurity
  • threat modeling

    Threat modeling is a procedure for optimizing application, system or business process security by identifying objectives and ...

  • social engineering

    Social engineering is an attack vector that relies heavily on human interaction and often involves manipulating people into ...

  • distributed denial-of-service (DDoS) attack

    A distributed denial-of-service (DDoS) attack is one in which multiple compromised computer systems attack a target, such as a ...

SearchHealthIT
SearchDisasterRecovery
  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

SearchStorage
  • storage security

    Storage security is the group of parameters and settings that make storage resources available to authorized users and trusted ...

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • cloud data management

    Cloud data management is a way to manage data across cloud platforms, either with or instead of on-premises storage.

Close