Fundamentals of computer output devices

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Information about Fundamentals of computer output devices

Published on July 14, 2014

Author: Jamjolojessa

Source: slideshare.net

FUNDAMENTALFUNDAMENTAL PARTS OF APARTS OF A COMPUTERCOMPUTER Output DevicesOutput Devices

REVIEWREVIEW 1. An input device with a set of1. An input device with a set of typewriter like keys thattypewriter like keys that enables you to enter data.enables you to enter data. 2. The standard lay-out of the2. The standard lay-out of the keyboard.keyboard. 3. An input devices that controls3. An input devices that controls the movement of the cursor.the movement of the cursor.

OUTPUT DEVICESOUTPUT DEVICES •Is any peripheral deviceIs any peripheral device that presents, displays,that presents, displays, alters, or records outputalters, or records output after it has left aafter it has left a computer’s system.computer’s system.

COMPUTERCOMPUTER SPEAKERSPEAKER •CONVERTCONVERT OUTPUTOUTPUT DATA INTODATA INTO SOUND.SOUND.

MONITORMONITOR • IS THE MOST POPULARIS THE MOST POPULAR OUTPUT DEVICE, IT RECIEVESOUTPUT DEVICE, IT RECIEVES SIGNALS FROM A VIDEO CARDSIGNALS FROM A VIDEO CARD INSIDE OF THE SYSTEM UNITINSIDE OF THE SYSTEM UNIT AND GIVES THE USER AAND GIVES THE USER A GRAPHICAL OR TEXTUALGRAPHICAL OR TEXTUAL DISPLAY.DISPLAY.

OLD AND MODERN MONITOROLD AND MODERN MONITOR • CATHODE RAY TUBE (CRT)CATHODE RAY TUBE (CRT) • LIQUID CRYSTAL DISPLAYLIQUID CRYSTAL DISPLAY (LCD)(LCD)

PRINTERPRINTER • CREATE IMAGES ON PAPER,CREATE IMAGES ON PAPER, PLASTIC, CLOTH AND OTHERPLASTIC, CLOTH AND OTHER PRINT MEDIA USINGPRINT MEDIA USING TEACHNOLOGIES LIKE INKTEACHNOLOGIES LIKE INK TRANSFER, HEAT TRANSFER,TRANSFER, HEAT TRANSFER, CHEMICAL REACTIONS, ANDCHEMICAL REACTIONS, AND PHYSICAL FORCE.PHYSICAL FORCE.

Types of PrintersTypes of Printers • Laser Printers-Laser Printers- uses toner anduses toner and internal laser to print. The mostinternal laser to print. The most popular is HP (Hewlett Packard.popular is HP (Hewlett Packard. Most laser printers offer excellentMost laser printers offer excellent printing capability. The averageprinting capability. The average laser printers prints in black.laser printers prints in black. ColorColor laser printers are about three tolaser printers are about three to four times the cost of one colorfour times the cost of one color laser printers.laser printers.

INKJET OR BUBBLE JETINKJET OR BUBBLE JET • USES INK TO PRINT. USUALLYUSES INK TO PRINT. USUALLY ARE AVAILABLE IN COLOR. THEARE AVAILABLE IN COLOR. THE QUALITY OF THE PRINT ISQUALITY OF THE PRINT IS DETERMINED BY THEDETERMINED BY THE DPI (DotsDPI (Dots Per Inch).Per Inch). The higher the DPIThe higher the DPI resolution the better quality of theresolution the better quality of the print. This is based on the number ofprint. This is based on the number of dots that the printer can draw withindots that the printer can draw within one square inch.one square inch.

DOT-MATRIX PRINTERDOT-MATRIX PRINTER • CREATES CHARACTERS BYCREATES CHARACTERS BY STRIKING PINS AGAINTS ANSTRIKING PINS AGAINTS AN INK RIBBON. EACH PININK RIBBON. EACH PIN MAKES A DOT, ANDMAKES A DOT, AND COMBINATIONS OF DOTSCOMBINATIONS OF DOTS FORM CHARACTERS ANDFORM CHARACTERS AND ILLUSTRATIONS.ILLUSTRATIONS.

PRINTERS ARE ALSOPRINTERS ARE ALSO CLASSIFIED BY THE FF.CLASSIFIED BY THE FF. CHARACTERISTIC:CHARACTERISTIC: • QUALITY OF TYPE: the outputQUALITY OF TYPE: the output should be either letter quality, nearshould be either letter quality, near letter quality, or draft quality.letter quality, or draft quality. • SPEED: measured by characters perSPEED: measured by characters per second (cps) or pages per minutesecond (cps) or pages per minute (ppm), the speed of printers varies(ppm), the speed of printers varies widely.widely.

• IMPACTIMPACT: impact printers include all: impact printers include all printers that work by striking an inkprinters that work by striking an ink ribbon, like daisy wheel, dot-matrix,ribbon, like daisy wheel, dot-matrix, and line printers.and line printers. • NON IMPACT-NON IMPACT- non impact printersnon impact printers include laser printers and ink jetinclude laser printers and ink jet printers.printers. • The differences between impact andThe differences between impact and non-impact printers is that impactnon-impact printers is that impact printers areprinters are much noisier.much noisier.

OTHER OUTPUT DEVICESOTHER OUTPUT DEVICES • HEADPHONE PROJECTORHEADPHONE PROJECTOR It is another version of speaker that is worn in or over the ears to hear audio or sounds. It allows the information to be displayed on the big screen so that the projected information can be seen in larger image.

END OF THE LESSONEND OF THE LESSON Thanks for ListeningThanks for Listening

TEST YOUR SELFTEST YOUR SELF • An output device that convert data intoAn output device that convert data into sound.sound. • Gives the user the graphical or textualGives the user the graphical or textual display.display. • Create images on paper or other printCreate images on paper or other print media.media. • A printer that uses ink to print.A printer that uses ink to print. • Printing speed is measured in cps or ppm.Printing speed is measured in cps or ppm. What is cps and ppm?What is cps and ppm?

Assignment/AgreementAssignment/Agreement • What is the difference betweenWhat is the difference between input devices and output devices.input devices and output devices. Explain your answer by uploadingExplain your answer by uploading photos of both devices.photos of both devices. • See all the presentation postedSee all the presentation posted on the School ICT Facebookon the School ICT Facebook walls.walls.

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