Post on 23-Feb-2016
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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