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PART 1 - CHAPTER 3 1 Input and output devices

PART 1 - CHAPTER 3 1 Input and output devices. devices/brainstorming-activity

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Page 1: PART 1 - CHAPTER 3 1 Input and output devices.  devices/brainstorming-activity

PART 1 - CHAPTER 3

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Input and output devices

Page 2: PART 1 - CHAPTER 3 1 Input and output devices.  devices/brainstorming-activity

http://teachlogy.wordpress.com/lesson/input-devices/brainstorming-activity/

 

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Page 3: PART 1 - CHAPTER 3 1 Input and output devices.  devices/brainstorming-activity

Objectives

By the end of the lesson you are able to:Define input devicesName at least three input devicesState one function of at least three input

devices

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Page 4: PART 1 - CHAPTER 3 1 Input and output devices.  devices/brainstorming-activity

Input Devices4

Devices that allow you to put information into the computer:

Examples: Keyboards, Mice, Microphones Laser pens, Graphics Tablets Scanners, OMRs, OCRs Digital cameras, Webcams

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Keyboard5

Suitable for: Data entry Typing documents

Not suitable for: Drawing

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Mouse6

Suitable for: Selecting items Highlighting text Clicking buttonswheel

scrolling

left buttonClicking, selecting, dragging

right buttonViewing the context menu

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Laser Pen and Graphics Tablet7

Ideal for drawing

light Pen graphics Tablet

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Scanner8

Converts documents to digital images

Saves you from retyping

Must use OCR software if you want to edit the scanned text

a flatbed scanner

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Digital Camera9

Uses digital sensor instead of film

Stores images on flash memory

Images can be viewed right away

LCD screen

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Webcam10

Records low quality video

Used for: Videoconferencing Chatting

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Microphone11

Like a normal microphone only smaller

Used for: Videoconferencing Chatting online Recording audio Giving voice commands

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Optical Mark Reader (OMR)12

Reads pen and pencil marks on formsUsed for surveys and multiple-choice Fast but gets confused by improper

shading

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Optical Character Reader (OCR)13

Reads characters in printed documentsSaves you from having to retypeTrouble reading low quality textUsed to read

Airline tickets Envelopes Printed bills

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Output Devices14

Devices that allow you to get information out of the computer

Examples: Monitors (Screens) Speakers Printers Multimedia projectors

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Barcode Scanner15

Used in supermarkets and retail storesIdentifies items by scanning barcodes

Computer system then retrieves prices

Faster and more accurate

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Exercises

http://teachlogy.wordpress.com/lesson/input-devices/exercises/

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Closure

Read more about input devices by clicking on the following links:

http://teachlogy.wordpress.com/lesson/input-devices/read-more/

http://teachlogy.wordpress.com/take-a-challenge/input-devices-activity/

http://teachlogy.wordpress.com/revision/http://teachlogy.wordpress.com/lesson/input-

devices/homework/

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Output devices

http://teachlogy.wordpress.com/lesson/input-devices/brainstorming-activity/

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Monitor19

LCD monitor CRT monitor

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Printer20

Produces hard copy output on paper4 main types:

Inkjet Laser Dot-matrix Thermal

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Inkjet Printer21

Squirt tiny ink droplets on paper

High quality images and text

Prints quickly

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Laser Printer22

Uses laser to fuse toner to paper

Fastest type of printer

Highest quality textExpensive

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Dot-matrix Printer23

Works almost like a typewriter

Uses inked ribbonSlow and noisyCan print in

duplicate using carbon paper

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Thermal Printer24

Applies heat to heat-sensitive paperLow quality outputCheap to operateUsed:

To print receipts and movie tickets In some fax machines

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Impact and Non-Impact Printers25

Impact printers: Print by striking the paper For example: dot-matrix

Non-impact printers: Print using other means For example: laser, inkjet, thermal

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Page Printers and Line Printers26

Page printer: Appears to print entire page at a time For example: laser and inkjet printers

Line printer appears to print an entire line at a time

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Speakers27

Produce audio outputLike normal speakers but smallerPlug into the computer’s sound card

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Multimedia Projector28

Connects to your PCUses lens to project

images on to a wall or board

Used for presentations

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Questions

What is Output device?Give three examples of output devicesExplain the function of speakerList three different of printerName two different monitor

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Group Discussion

You are to make a group of three. Browse the internet and search for pictures output

devices and functions of:

PlotterProjectorComputer output on microfilm

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Exercise

http://teachlogy.wordpress.com/lesson/Output-devices/exercises/

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