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3.5: Summary

Introduction to Information Technology · LibreTexts

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    From LibreTexts, under CC BY-NC-SA 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

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    3.1: Computer Systems Hardware

    There are a number of different types of computer system in use today.

    The personal computer, also known as the PC or desktop, is one of the most common types of computer due to its versatility and relatively low price.

    Laptops (or Notebooks) are generally very similar, although may use lower-power or reduced size components.

    Others include tablets, mobile phones, and e-readers for work, home, and leisure activities.

    3.2: Hardware components

    All computer devices have similar components in the inside. They may include:

    • Chassis or case, motherboard, CPU, GPU, chipset, RAM cards, ROM chips, buses, CMOS, power connector, among others.

    3.3: Peripherals

    A peripheral device by definition is what a computer can read to receive or output information.

    The mode of receiving this information is via:

    • HDD/SSD
    • removable storage devices (diskettes, optic discs, external HDD/SSD)
    • removable media (USB Flash Drives, SD cards)
    • Bluetooth.

    3.4: Input/Output devices

    Input devices

    They allow the end-user to enter data into the computer system.

    The most common input devices are the keyboard and the mouse.

    Other input devices include: scanners, microphones, joysticks, card readers, digital cameras, biometric devices, voice input devices, among others.

    Output devices

    They allow the end-user to receive data or information from the computer system.

    The most common output devices are the monitor (screen) and the printer.

    Other output devices include: plotters, speakers, video projectors, Musical Instrument Digital Interface (MIDI), Speech synthesis devices.

    Summary image banner by Luis R Castellanos

    This page titled 3.5: Summary was last modified on Wed, 19 Aug 2026 14:49:48 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Luis Castellanos Hurtado.