Computer output devices
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This document discusses various computer output and storage devices. It describes printers, monitors, and speakers as common output devices that produce text, graphics, and audio. Storage devices discussed include USB flash drives, hard disks, and optical discs like CDs, DVDs, and Blu-ray discs, which permanently store large amounts of data. Communication devices allow computers to transmit and receive data over various media like cables, phone lines, cellular networks, and satellites.
Computer output devices
- 1. Computer Output Devices Lesson 2 Melanio R. Florino Jr. Teacher 111
- 2. Output devices An output device is any hardware that conveys information to one or more people. Three commonly used output devices are a printer, a monitor, and speakers.
- 3. Printer It produces text and graphics on a physical medium such as paper.
- 4. Monitor It displays text, graphics, and videos on a screen.
- 5. Speaker It allows you to hear music, voice and other audio (sounds).
- 6. System Unit The case that contains the electronic components of the computer that are used to process data.
- 9. System Unit The circuitry of the system unit usually is part of or is connected to a circuit board called the motherboard.
- 11. Two components on the motherboard Processor also called the CPU (Central Processing Unit) is the electronic component that interprets and carries out the basic instructions that operate the computer.
- 12. Two components on the motherboard Memory consist of electronic components that story instructions waiting to be executed and data needed by those instructions.
- 13. Although some forms of memory are permanent, most memory keeps data and instructions temporarily, which means its contents are erased when the computer is shut off.
- 15. Storage devices Storage holds data, instructions and information for future use. For example, computers can store hundreds or millions of customer names and addresses. Storage holds these permanently.
- 16. A computer keeps data, instructions, and information on storage media. A storage device records (writes) and /or retrieves (reads) items to and from storage media. Drives and readers/writers, which are types of storage devices accept a specific kind of storage media.
- 17. Storage device USB (Universal Serial Bus) flash drive is a portable storage device that is small and lightweight enough to be transported on a keychain or in a pocket.
- 18. Storage device Hard disk provides much greater storage capacity than a USB. Hard disks are enclosed in an airtight, sealed case.
- 20. Optical disc Optical disc is a flat, round, portable metal disc with a plastic coating. CDs, DVDs, and Blu-ray discs are three types of optical discs.
- 21. Optical discs
- 22. Optical discs A CD can hold from 650 million to 1 billion characters. A DVDs can store two full-length movie or 17 billion characters. A Blu-ray discs can store about 46 hours of standard video or 100 billion characters.
- 23. Communication devices A communication device is a hardware component that enables a computer to send (transmit) and receive data, instructions, and information to and from one or more computers or mobile devices. A widely used communication device is a modem.
- 24. Modem
- 25. Communications occur over cables, telephone lines, cellular radio networks, satellites, and other transmission media. Some transmission media such as satellites and cellular radio networks are wireless, which means they have no physical lines or wires.