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  2. History of personal computers - Wikipedia

    en.wikipedia.org/wiki/History_of_personal_computers

    The Kenbak-1, released in early 1971, is considered by the Computer History Museum to be the world's first personal computer. It was designed and invented by John Blankenbaker of Kenbak Corporation in 1970, and was first sold in early 1971. Unlike a modern personal computer, the Kenbak-1 was built of small-scale integrated circuits, and did not ...

  3. Personal computer - Wikipedia

    en.wikipedia.org/wiki/Personal_computer

    An artist's depiction of a 2000s-era desktop-style personal computer, which includes a metal case with the computing components, a display monitor and a keyboard (mouse not shown) A personal computer, often referred to as a PC, is a computer designed for individual use. [1] It is typically used for tasks such as word processing, internet ...

  4. Computer - Wikipedia

    en.wikipedia.org/wiki/Computer

    A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations ( computation ). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system may refer to a nominally ...

  5. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...

  6. Antivirus software - Wikipedia

    en.wikipedia.org/wiki/Antivirus_software

    ClamTk, an open-source antivirus based on the ClamAV antivirus engine, was originally developed by Tomasz Kojm in 2001. Antivirus software (abbreviated to AV software ), also known as anti-malware, is a computer program used to prevent, detect, and remove malware . Antivirus software was originally developed to detect and remove computer ...

  7. Computer security - Wikipedia

    en.wikipedia.org/wiki/Computer_security

    An example of physical security measure: a metal lock on the back of a personal computer to prevent hardware tampering. Computer security, cybersecurity, digital security or information technology security (IT security) is the protection of computer systems and networks from attacks by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware ...

  8. Computer-aided design - Wikipedia

    en.wikipedia.org/wiki/Computer-aided_design

    A 2D CAD drawing A 3D CAD model. Computer-aided design (CAD) is the use of computers (or workstations) to aid in the creation, modification, analysis, or optimization of a design.

  9. Central processing unit - Wikipedia

    en.wikipedia.org/wiki/Central_processing_unit

    A central processing unit ( CPU ), also called a central processor, main processor, or just processor, is the most important processor in a given computer. [1] [2] Its electronic circuitry executes instructions of a computer program, such as arithmetic, logic, controlling, and input/output (I/O) operations. [3] [4] [5] This role contrasts with ...