Computer Components Overview
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Questions and Answers

What is the main function of the processor in a computer?

  • Display information to users
  • Store data permanently
  • Control other components (correct)
  • Provide input for users
  • Which component is primarily responsible for temporarily holding data while a computer is in use?

  • Input device
  • Processor
  • Memory (correct)
  • Storage device
  • Which of the following is NOT one of the six primary components of a computer?

  • Storage devices
  • Smartphone applications (correct)
  • Memory
  • Output devices
  • What are peripherals in the context of computer components?

    <p>Devices that connect to the system unit and are controlled by the processor</p> Signup and view all the answers

    When a user starts a program, where do the program's instructions move from?

    <p>Storage device</p> Signup and view all the answers

    Which component is part of the system unit?

    <p>Hard drive</p> Signup and view all the answers

    Which function does an output device serve in a computer system?

    <p>Display information to the user</p> Signup and view all the answers

    What are communications devices primarily used for in a computer?

    <p>Transmitting data to and from other computers</p> Signup and view all the answers

    What are the pie-shaped sections on a hard disk called?

    <p>Sectors</p> Signup and view all the answers

    What is the typical storage capacity range of internal hard disks for personal computers?

    <p>160 GB to more than 2 TB</p> Signup and view all the answers

    What is the typical diameter of hard disk platters in notebook computers?

    <p>2.5 inches or less</p> Signup and view all the answers

    How many read/write heads does a typical hard disk have?

    <p>One for each side of each platter</p> Signup and view all the answers

    At what speeds do hard disk platters typically spin?

    <p>5,400 to 15,000 RPM</p> Signup and view all the answers

    What controls the movement of the read/write heads in a hard disk?

    <p>The actuator and circuit board</p> Signup and view all the answers

    What happens to hard disk platters to conserve power when the computer is not in use?

    <p>They slow down or stop spinning</p> Signup and view all the answers

    In terms of diameter, what is the most common size of hard disk platters for desktop computers?

    <p>3.5 inches</p> Signup and view all the answers

    What type of printer is known for producing high-quality images using toner?

    <p>Laser printer</p> Signup and view all the answers

    Which of the following factors primarily determines the speed of an ink-jet printer?

    <p>Pages per minute (ppm)</p> Signup and view all the answers

    What is a multifunction peripheral capable of doing?

    <p>Scan and photocopy documents</p> Signup and view all the answers

    Which output device is primarily used for creating visual displays?

    <p>Data projector</p> Signup and view all the answers

    What is a stylus commonly used for on a smart phone?

    <p>Typing without a keyboard</p> Signup and view all the answers

    What is a unique feature of photo ink-jet printers?

    <p>They produce photo-lab-quality pictures.</p> Signup and view all the answers

    How does a mouse function in relation to the pointer on the screen?

    <p>The mouse's movement directly correlates to the pointer's movement</p> Signup and view all the answers

    Which statement is true regarding laser printers?

    <p>They generally print faster than ink-jet printers.</p> Signup and view all the answers

    What feature differentiates phones with mini-keyboards from those with standard keypads?

    <p>Mini-keyboards provide one key for each letter of the alphabet</p> Signup and view all the answers

    What type of medium do printers produce text and graphics on?

    <p>Physical mediums such as paper</p> Signup and view all the answers

    Which of the following best describes a mouse?

    <p>A pointing device that fits under the palm</p> Signup and view all the answers

    Which characteristic is often associated with more expensive laser printers?

    <p>Higher print speed</p> Signup and view all the answers

    What type of feedback does a mouse provide when an action is performed?

    <p>Visual feedback by changing cursor shape</p> Signup and view all the answers

    What does each key on a standard keypad represent in some mobile phones?

    <p>Multiple characters</p> Signup and view all the answers

    What type of sensor might be found at the bottom of a mouse?

    <p>Optical sensor</p> Signup and view all the answers

    In which context is the term 'pointer' used?

    <p>To represent a symbol that follows mouse movement on-screen</p> Signup and view all the answers

    What is a characteristic of DVD-R, DVD+R, and BD-R discs?

    <p>They allow writing on the disc only once.</p> Signup and view all the answers

    How do rewritable DVDs, such as DVD-RW and DVD+RW, differ from their write-once counterparts?

    <p>They can be written to multiple times.</p> Signup and view all the answers

    What is a common pricing structure for cloud storage services for organizations?

    <p>Charges based on storage usage per gigabyte.</p> Signup and view all the answers

    Which of the following is NOT commonly offered by cloud storage providers?

    <p>Video game hosting.</p> Signup and view all the answers

    What is the primary function of communications devices?

    <p>To transmit and receive data between devices.</p> Signup and view all the answers

    Which of the following is an example of a communications device?

    <p>Modem.</p> Signup and view all the answers

    Which type of cloud storage would you use for storing videos?

    <p>YouTube.</p> Signup and view all the answers

    What is an example of a service that provides email message storage?

    <p>Gmail.</p> Signup and view all the answers

    Study Notes

    Computer Components

    • A computer processes data and produces information, like a cash register receipt.
    • Key components of a computer include input devices, the processor, memory, output devices, storage devices, and communication devices.
    • The processor, also known as the CPU, is responsible for executing instructions and processing data.
    • The processor, memory, and storage devices are located within the system unit.
    • A peripheral device connects to the system unit and is controlled by the processor.
    • Peripherals can include input, output, storage, or communication devices.

    Processor and Memory

    • The processor communicates with other devices to carry out tasks.
    • When a program starts, its instructions are transferred from a storage device to memory.

    Input Devices

    • A variety of options are available for typing on a smart phone, including on-screen keyboards, stylus pens, mini-keyboards, and keypads.

    Mice and Pointing Devices

    • A mouse is a pointing device used to control the movement of the pointer on the screen.
    • The pointer's location and shape change as the user moves the mouse.
    • Mouse buttons are used to perform actions associated with objects on the screen, such as clicking buttons or opening links.
    • Mice use different mechanisms to detect movement: ball, optical sensor, or laser sensor.

    Output Devices

    • Commonly used output devices include display devices, printers, speakers, headphones, earbuds, data projectors, and interactive whiteboards.
    • Printers produce text and graphics on a physical medium like paper.

    Printers

    • Ink-jet printers produce text and graphics in both black and white and color on various paper types.
    • Some ink-jet printers, called photo printers, produce high-quality pictures, ideal for home or small-business use.
    • The speed of an ink-jet printer is measured by the number of pages per minute (ppm) it can print.
    • Laser printers are high-speed, high-quality printers that operate similar to copy machines.
    • Laser printers use a laser beam and powdered ink, called toner, to create images on a special drum inside the printer.
    • Multifunction peripherals, also known as all-in-one devices, combine the functionality of a printer, scanner, copy machine, and potentially a fax machine.

    Hard Disk Drives

    • A hard disk drive stores data on platters, which are circular disks with a magnetic coating.
    • Each platter has two read/write heads, one for each side.
    • Tracks are narrow recording bands that circle the surface of the disk.
    • Sectors are pie-shaped sections that break the tracks into small arcs.
    • A sector typically stores up to 512 bytes of data.
    • The storage capacity of internal hard drives ranges from 160 GB to more than 2 TB.
    • The read/write heads are moved by arms to the proper location on the platter.
    • Platters spin at a high rate of speed, typically 5,400 to 15,000 revolutions per minute.

    DVD and Blu-ray Drives

    • DVD-R, DVD+R, and BD-R enable users to write on the disc once and read it many times.
    • DVD-RW, DVD+RW, and DVD+RAM are rewritable DVD formats.
    • BD-RE is a rewritable Blu-ray format.
    • To write on these discs, a compatible drive or recorder is required.

    Cloud Storage

    • Cloud storage is an internet service that provides hard disk storage to computer users.
    • Fee arrangements for cloud storage services vary.
    • Cloud storage services offer a variety of storage options, including backup, additional storage for files, digital photos, digital videos, emails, and documents.

    Communications Devices

    • A communication device enables a computer to send and receive data, instructions, and information to and from other computers or devices.
    • A modem is a commonly used communication device.
    • Communications occur over different transmission media like cables, telephone lines, cellular networks, and satellites.

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    Description

    This quiz covers essential computer components, including input devices, processors, memory, output devices, and storage options. It explains how these components interact to process data and produce information. Test your understanding of how computers function and their key parts.

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