INPUT AND OUTPUT DEVICES
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This document discusses various input and output devices used in computing. It describes common input devices like keyboards, mice, touchpads, microphones and cameras. It also covers output devices such as monitors, printers and speakers. Input devices capture and translate information into a form that can be processed by computers, while output devices present processed information to users in an understandable form.
INPUT AND OUTPUT DEVICES
- 2. Name ID Batch Tarek Aziz M21221111049 28th
- 5. Input Devices • Input device captures information and translates it into a form that can be processed and used by other parts of your computer. Keyboards Pointing devices Game controllers Scanners Styluses Microphones Digital cameras Web cams
- 7. The keyboard is the most common input device. Types of keyboards include: • Wireless • Multimedia and one-touch access • Portable keyboards for PDAs
- 8. Types of Input Devices
- 9. Pointing Devices Various pointing devices are available Types of pointing devices: • Mouse Mechanical mouse Optical mouse Wireless mouse • Trackball • Touchpad • Pointing stick
- 10. Game Controller Game controllers are used mainly to play games Types of gaming devices • Gamepads • Joysticks • Gaming wheels • Force feed
- 11. Specialized Input Devices Other types of input devices include: • Scanners • Styluses • Microphones • Digital cameras • Web cams
- 12. Scanner •Scanner is a light sensitive device that helps you copy or capture images, photos, and artwork that exist on paper. Types of scanners include: Flatbed
- 13. Styluses • Stylus is an input device consisting of a thin stick that uses pressure to enter information or to click and point • Styluses are used with: PDAs Tablet PCs Graphics tablets
- 14. Microphones • Microphones are used to input audio • Three main types of microphones are: Desktop microphones Headsets Directional microphones • Speech recognition is increasingly being included in application software
- 16. Output Devices Output devices take information within your computer and present it to you in a form that you can understand Main output devices: Monitors Printers Speakers
- 18. Flat Panel Display Devices Devices with flat-panel displays • Tablet PCs • PDAs • Cellular phones • Desktop computers
- 19. Monitors CRTs Flat-panel displays Gas plasma LCD (liquid crystal display) Passive matrix Active matrix Called TFT (thin film transistor) Separate transistor for every pixel
- 20. Printers Inkjet – most popular Makes images by forcing droplets through nozzles Top speed is 20 pages per minute Laser Forms images using an electrostatic process Prints between 3 and 30 pages per minute
- 21. Speakers A speaker is a device that produces computer output as sound Speakers are common devices in computer systems Examples include: • Built-in speaker • Two-device set speakers • Surround sound speakers
- 22. The End