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Lesson 6: OUTPUT DEVICES

ICT Fundamentals Lesson 6

Lesson 62

Printers

ICT Fundamentals

Ink Jet printer- A non-impact printer that forms the image by spraying ink or using heat and pressure.- aka bubble jet printer - contains ink-filled print cartridges- the most popular printer

Lesson 63

Printers (cont..)

ICT Fundamentals

Solid Ink printerSolid ink - a technology used in computer printers and multifunction devices originally created by Tektronix in 1986- uses solid ink sticks in lieu of the fluid ink or toner powder usually used in printers

Lesson 64

Printers (cont..)

ICT Fundamentals

Thermal Transfer printer- a printer which prints on paper (or some other material) by melting a coating of ribbon so that it stays glued to the material on which the print is applied. - usually used to print on: barcode labels Clothing labels plastic labels for chemical containers

Lesson 65

Printers (cont..)

ICT Fundamentals

Dye Sublimation printer- a computer printer which employs a printing process that uses heat to transfer dye to a medium such as a plastic card, paper, or fabric. - produces higher quality images- use CMYO color instead of CMYK

Lesson 66

Printers (cont..)

ICT Fundamentals

Laser printer- have high quality resolution and are also much faster than ink-jet printers.- also forms images with dots but uses laser technology- uses toner cartridge instead ofink cartridge

Lesson 67

Printers (cont..)

ICT Fundamentals

Dot Matrix printer- a type of computer printer with a print head that runs back and forth, or in an up and down motion, on the page and prints byimpact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter

Lesson 68

Monitors

ICT Fundamentals

CRT (Cathode Ray Tube) Monitors- A display device that is similar to a television

Flat Panel Monitors- much less deep in size than the CRT but is more expensive- uses LCD (Liquid Crystal Display)

Lesson 69

Speakers

ICT Fundamentals

- used for audio output such as beeps, human voice and music

Modem (Modulator Demodulator)- a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. - used for both input and output

Lesson 610 ICT Fundamentals

Lesson 7: SYSTEM

UNIT

Lesson 611

The System Unit

ICT Fundamentals

the part of the computer which is responsible for accepting and processing the data brought in by the input devices

also responsible for passing the resulting information to the users via the output devices

composed of integrated circuitry designed to perform a particular task in coordination with other ICs

Lesson 612

Motherboard

ICT Fundamentals

provides the electricalconnections by whichthe other componentsof the system commu-nicate

hosts the central pro-cessing unit, and other subsystems and devices

Lesson 613

Ports

ICT Fundamentals

a connection fromthe main circuit board to a periphe-ral device such as keyboard, a printer or a video monitor

serves as an inter-face between the computer and other computers or peripheral devices

Lesson 614

Bus – IDE (Integrated Drive Electronics)

ICT Fundamentals

responsible for transporting electronic signals from place to place on specific predefined routes

Expansion Slots long plug-in strips used to

connect expansion cards to the main circuit board

Expansion Cards is a printed circuit board

that can be inserted into anexpansion slot of a compu-ter motherboard to add additional functionality to a computer system

Lesson 615

Memory

ICT Fundamentals

The general term used to describe where the computer holds data and instruction before and after they are processed

RAM – Random Access Memory- a form of computer data storage that holds temporary data

ROM – Read Only Memory- holds computer start-up routines which are hard-wired instructions

Lesson 616

CPU (Central Processing Unit)

ICT Fundamentals

Brain of the computer an integrated circuit chip

containing electronic circuitry that controlsthe interpretation andexecution of instructions