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System outputs - Computer System
The document provides an overview of output devices, explaining their functions and types, including display devices like monitors, printers, and audio output devices such as speakers and headphones. It details various printer types and functionalities, highlighting their specific uses and qualities. Additionally, it discusses other output devices like projectors and interactive whiteboards, along with considerations for accessibility options for physically challenged users.
System outputs - Computer System
- 1. Living in aDigital World Discovering Computers 2010
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- 4. What Is Output? •Output is data that has been processed into a useful form 4
- 5. What Is Output? •An output device is any type of hardware component that conveys information to one or more people 5
- 6. Display Devices • Adisplay device visually conveys text, graphics, and video information • A monitor is packaged as a separate peripheral – LCD monitor – Widescreen 6
- 7. Display Devices • Liquidcrystal display (LCD) uses a liquid compound to present information on a display device 7
- 8. Display Devices • Thequality of an LCD monitor or LCD screen depends primarily on: 8
- 9. Display Devices • Resolutionis the number of horizontal and vertical pixels in a display device – A higher resolution uses a greater number of pixels 9
- 10. Display Devices • Thegraphics processing unit (GPU) controls the manipulation and display of graphics on a display device • LCD monitors use a digital signal and should plug into a DVI port, and HDMI port, or a DisplayPort 10
- 11. Display Devices • Plasmamonitors are display devices that use gas plasma technology and offer screen sizes up to 150 inches 11
- 12. Display Devices • Televisionsalso are a good output device – Require a converter if you are connecting your computer to an analog television • Digital television (DTV) offers a crisper, higher- quality output • HDTV is the most advanced form of digital television 12
- 13. Video: SID: SizeMatters 13 CLICK TO START
- 14. Display Devices • ACRT monitor is a desktop monitor that contains a cathode-ray tube – Have a much larger footprint than do LCD monitors 14
- 15. Printers • A printerproduces text and graphics on a physical medium – Printed information is called a hard copy, or printout – Landscape or portrait orientation 15
- 16. Printers 16 Before purchasing aprinter, ask yourself a series of questions:
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- 18. Printers • A nonimpactprinter forms characters and graphics on a piece of paper without actually striking the paper 18
- 19. Printers • An ink-jetprinter forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper – Color or black-and-white – Printers with a higher dpi (dots per inch) produce a higher quality output 19
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- 25. Printers • A multifunctionperipheral (MFP) is a single device that prints, scans, copies, and in some cases, faxes – Sometimes called an all-in-one device 25
- 26. Printers • A thermalprinter generates images by pushing electrically heated pins against the heat-sensitive paper 26
- 27. Printers • A mobileprinter is a small, lightweight, battery-powered printer that allows a mobile user to print from a mobile device 27
- 28. Printers • A labelprinter is a small printer that prints on adhesive-type material • A postage printer prints postage stamps – Postage also can be printed on other types of printers 28
- 29. Printers • Plotters areused to produce high-quality drawings • Large-format printers create photo-realistic quality color prints on a larger scale 29
- 30. Printers • Impact printersform characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper 30
- 31. Printers • A dot-matrixprinter produces printed images when tiny wire pins on a print head mechanism strike an inked ribbon • A line printer prints an entire line at a time 31
- 32. Speakers, Headphones, andEarbuds • An audio output device produces music, speech, or other sounds 32
- 33. Speakers, Headphones, andEarbuds • Headphones are speakers that cover your head or are placed outside of the ear • Earbuds (also called earphones) rest inside the ear canal 33
- 34. Speakers, Headphones, andEarbuds • Some speakers are specifically designed to play audio from a portable media player – Wireless speakers 34
- 35. Speakers, Headphones, andEarbuds 35
- 36. Other Output Devices •Other output devices are available for specific uses and applications 36
- 37. Other Output Devices •A data projector is a device that takes the text and images displaying on a computer screen and projects them on a larger screen – Digital light processing (DLP) projector 37
- 38. Other Output Devices •An interactive whiteboard is a touch-sensitive device, resembling a dry-erase board, that displays the image on a connected computer screen 38
- 39. Other Output Devices •Force-feedback sends resistance to the device in response to actions of the user • Tactile output provides the user with a physical response from the device 39
- 40. Putting It AllTogether 40
- 41. Putting It AllTogether 41
- 42. Putting It AllTogether 42
- 43. Output Devices for PhysicallyChallenged Users • Many accessibility options exist for users with various disabilities 43
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