Input Devices in computers - basic knowledge
- 2. Objectives • Define the term Input Device. • List input devices that can be connected to the computer. • Explain the function of each input device. • State the different types of input devices(plug and play, pointing)
- 3. Input devices • Used to input data in to the computer . • Feed data • Examples – Keyboard – Mouse – Scanner – Touch screen/Touchpad – Light pen – Barcode reader – Joystick – Track ball – Graphic tablet
- 4. Keyboard • Types of keys – Typing keys – Numeric keypad – Function keys • F1 to F12 – Control keys • Alt • Ctrl • Enter • Home
- 6. Key board layouts • QWERTY – for the first six letters in the layout • Dvorak – places the most commonly used letters in the most convenient arrangement
- 7. Mouse
- 8. Scanner • Hand held • Flatbed
- 10. Lighter pen
- 11. Barcode reader • Read information in barcode and input to the computer.
- 12. Joystick • Help to play computer games
- 13. • Useful for those who cannot handle mouse well.
- 14. • Web camera • Digital camera
- 15. Graphic tablet • Drawing graphics
- 16. Pointing devices How to identify • Sending command signals to the computer. • Selecting items on the screen. • Selecting commands from commands menu. • Drawing graphs etc. Examples • Mouse • Trackball • Joystick • Touch Pad • Touch Screen • Light Pen • Digitizer/Graphic Tablet
- 17. Plug and play devices • Devices that can be hot plug and use – USB • Mouse • Keyboard • Digital camera • Devices like scanners can not categorize under plug and play • Drivers software should be installed