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Module 1.3 Hardware. Contents Introduction Input Output Storage Environmental and health issues Test and improve your knowledge Module Activities.

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Presentation on theme: "Module 1.3 Hardware. Contents Introduction Input Output Storage Environmental and health issues Test and improve your knowledge Module Activities."— Presentation transcript:

1 Module 1.3 Hardware

2 Contents Introduction Input Output Storage Environmental and health issues Test and improve your knowledge Module Activities

3 Introduction Hardware is all the things on a computer that you can physically touch. Processing Input Output Storage

4 Input What is input? Input is the data and instructions that are given to a computer. Programs A set of instructio ns loaded into memory when activated Commands Given by user e.g. You click on the Font Size command User responses To a question ‘asked’ by a program

5 Input Mouse

6 The keyboard The keyboard is the most commonly used input device. Shortcut keys F1 Esc (  ) Input

7 Wireless mouse and keyboard Advantages of wireless devices: Less clutter No cords to get tangled Wide range of movement Disadvantages of wireless devices: Require batteries (to produce the wireless signal) More expensive Sometimes there’s interference with the wireless signal Can easily be removed, stolen quickly and quietly Input

8 Output Output is whatever the computer produces to provide us with the results of its processing. OutputSoft copy Hard Copy

9 Monitor CRT Monitors LCD Soft copy Flat-panel monitors consume less space flicker less consume less power environmentally friendly Output

10 Monitor Flat panel (LCD) viewing angle Soft copy viewing angle specification. Most monitors have a viewing angle of at least 160 degrees Output

11 Monitor The size of a monitor measured diagonally in inches Size Resolution Response time A low specification time for high quality graphics and video LCD screens have a recommended resolution Soft copy Output

12 Printers Hard copy Inkjet printersLaser printers spray microscopic dots of ink onto the paper cheap to buy expensive to run produces good quality colour prints slightly slower than laser printers work like a photo-copier machine expensive to buy cheaper to run and more suited to printing large volumes print faster black and white and colour laser printers (more expensive) Output

13 Printers Hard copy Connecting and using printers Printer Installation Usb port Changing the Default Printer Output

14 Printers Hard copy Connecting and using printers Printer Queues You can cancel, pause or restart the printing here Output

15 Storage device (CD/DVD-drive) Storage medium (CD) Non-volatile: Storage keeps its contents at all times Storage

16 Storage capacities A kilobyte (KB) is 1024 bytes A megabyte (MB) is 1024 KB A gigabyte (GB) is 1024 MB A terabyte (TB) is 1024 GB. Storage

17 Hard drives In case: stores all programs and data External/portable: USB connected, gets power from PC Storage

18 Flash disks External/portable: USB connected, gets power from PC Appears as another disk on PC Storage

19 Ports on your computer Network ports FireWire ports Storage

20 Health concerns RSI: Repetitive Strain Injury To prevent RSI: Ergonomically designed keyboards Environmental and health issues

21 Health tips for using computers Sit correctly Height of your seat and/or table Lighting and ventilation/air circulation Mouse and keyboard placements Prevent eye strain Regular breaks Environmental and health issues

22 Tips on how to practice green computing Switch off computers and devices you are not using Avoid the senseless wasting of paper Try and repair or upgrade hardware Don’t just throw away ink and toner cartridges Refill and reuse cartridges Environmental and health issues

23 Overview of module Introduction to hardware Basic hardware Input Types of input Keyboard and Mouse Storage Storages devices vs. Storage media Hard disks, flash drives Output Types of output Printers and Monitors Ports USB Network Firewire VGA Health and environmental issues Green Computing E -Waste Health Issues Health Tips Test and improve your knowledge

24 Important terms and concepts BluetoothByte Corded mouse Wireless mouse DisplayErgonomicsEsc F1 FireWire port Flash disks Gigabyte (GB) Green computing Hard driveHardcopy Hardware Inkjet printer InputKeyboard Kilobyte (KB) Laser printer Megabyte (MB) Monitor Size Mouse Network ports Output Print Screen Key Printers Repetitive strain injury (RSI) Resolution Shortcut keys SoftcopyStorage Storage device Storage media Terabyte (TB) Touch PadUSB portsVGA portVolatileWindow key Default printer Plug-and- play Printer queues Test and improve your knowledge

25 Activity Written Activity Written


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