AOIT Principles of Information Technology Copyright © 2007–2014 National Academy Foundation. All rights reserved.

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Presentation transcript:

AOIT Principles of Information Technology Copyright © 2007–2014 National Academy Foundation. All rights reserved.

Why are the objects on this slide called peripherals? Lesson 62MBSH AOIT

What makes a keyboard an “input device”? A computer keyboard reports each key press to a software program that interprets the keystrokes. A computer keyboard reports each key press to a software program that interprets the keystrokes. A keyboard also gives commands to the operating system of a computer, such as the Windows Ctrl-Alt- Delete combination, which brings up a task window. A keyboard also gives commands to the operating system of a computer, such as the Windows Ctrl-Alt- Delete combination, which brings up a task window. 3

What kind of mouse do you have? USB wireless optical mouse Trackball mouse 4

LCD monitor CRT monitor What makes a monitor an output device? Could an LCD ever be an input device too? 5

High-definition monitors have better resolution, which means a clearer picture. High-definition monitors have better resolution, which means a clearer picture. A pixel (picture element) is the smallest colored dot that can be displayed on the screen. A pixel (picture element) is the smallest colored dot that can be displayed on the screen. More pixels = more detail. More pixels = more detail. Standard resolution: 1280 x 720 pixels (width x height) Standard resolution: 1280 x 720 pixels (width x height) High definition: 1920 x 1080 pixels High definition: 1920 x 1080 pixels Does your monitor have HD? Have you ever noticed the difference between HD and standard resolution? 6

Is a printer an input device or an output device? What about a scanner? Laser Printers Inkjet Scanner 7 Multifunctional Printers

3½ in. floppy drive CD-ROM drive Blu-ray drive DVD drive 8

Which of these external devices have you used? USB drive DVD drive with laser light 9

 In the past 2 years Adobe and Microsoft has develop space for users to store their files in huge large servers in many parts of the United States. Users can get their files on-line through OneDrive and Google.docs.  What is the advantages and disadvantages using the cloud for storage? 10

What kind of drives do computers in your classroom have? Towers usually have at least one bay for an optical drive, such as a DVD or Blu-ray drive. Towers usually have at least one bay for an optical drive, such as a DVD or Blu-ray drive. Different sizes and types of drives can all be loaded into the same tower case. Different sizes and types of drives can all be loaded into the same tower case. 11

 Keyboard  Mouse  Monitor  Printer  Scanner  Storage drives  Game controllers/joysticks  Can you think of anything else? Lesson 612MBSH AOIT