Lesson 6: OUTPUT DEVICES

1. Lesson 6:OUTPUT DEVICES Lesson 6

2. Printers • 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 6

3. Printers (cont..) • Solid Ink printer Solid 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 6

4. Printers (cont..) • 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 6

5. Printers (cont..) • 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 6

6. Printers (cont..) • 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 of ink cartridge Lesson 6

7. Printers (cont..) • 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 by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter Lesson 6

8. Monitors • 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 6

9. Speakers • 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 6

10. Lesson 7:system unit Lesson 6

11. The System Unit • 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 6

12. Motherboard • provides the electrical connections by which the other components of the system commu- nicate • hosts the central pro- cessing unit, and other subsystems and devices Lesson 6

13. Ports • a connection from the 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 6

14. Bus – IDE (Integrated Drive Electronics) • 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 an expansion slot of a compu- ter motherboard to add additional functionality to a computer system Lesson 6

15. Memory • 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 6

16. CPU (Central Processing Unit) • Brain of the computer • an integrated circuit chip containing electronic circuitry that controls the interpretation and execution of instructions Lesson 6