Computer Science Terms

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CPU (Central Processing Unit)

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The main processing unit of a computer that executes instructions and performs calculations.

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Operating System

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Software that manages hardware resources and provides services for application programs.

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Input Device

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A device used to provide data to a computer, such as a keyboard or mouse.

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Output Device

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A device that displays or outputs data from a computer, such as a monitor or printer.

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Peripheral Device

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An external device that connects to a computer to add functionality, like a scanner or external hard drive.

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Storage Device

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Hardware used to store data, such as an HDD (Hard Disk Drive) or SSD (Solid State Drive).

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Software

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A collection of instructions and data that tell the computer how to perform specific tasks.

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Application Software

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Programs designed to perform specific user tasks, such as word processing or web browsing.

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Hardware

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The physical components of a computer system, such as the CPU, RAM, and motherboard.

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Mainframe Computer

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A powerful computer used primarily by large organizations for critical applications and bulk data processing.