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Examining Input Devices

Examining Input Devices. Computer Concepts Unit B. Examining Input Devices. Give examples of input devices: Keyboard, the primary input device Pointing device Mouse Touchpad Track pad Touch screen. Examining Input Devices. Are all keyboards the same? Most keyboards are similar .

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Examining Input Devices

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  1. Examining Input Devices Computer Concepts Unit B

  2. Examining Input Devices • Give examples of input devices: • Keyboard, the primary input device • Pointing device • Mouse • Touchpad • Track pad • Touch screen

  3. Examining Input Devices • Are all keyboards the same? • Most keyboards are similar. • A computer keyboard includes the basic typing keypad with keys or buttons with lettersand numbers.

  4. Examining Input Devices • How can I use the keyboard to move around the screen? • Desktop and notebook computer keyboards include a navigation keypad • Home • End • Arrow keys • You use these keys to move the insertion point (cursor) on the screen • Insertion point: flashing vertical bar on the screen.

  5. Examining Input Devices • Why do I need a mouse? • A mouse allows you to control an on-screen pointer and perform other screen-based graphical controls • Mouse is the primary pointing device. Scroll wheel Right mouse button Left mouse button Additional Buttons

  6. Examining Input Devices • Do all mice use the same technology? • Wired mouse • Wireless mouse

  7. Examining Input Devices • Do all mice use the same technology? • Optical mouse: uses an LED ( an electronic light) • Laser mouse: uses laser as the light source to track movement.

  8. Examining Input Devices • What other pointing devices can I use? • Trackballs: is a roller ball on the top of a mouse, you use your fingers or the palm of your hand to roll the ball and move the pointer. • Touchpad: also called track-pad, it is a touch-sensitive surface on which you can slide your fingers to move the on-screen pointer.

  9. Examining Input Devices • Why do some computers have touch screen? • PDAs • Tablet computers • Retail cash register • Information kiosks • Touch screen technology: can interpret a single touch or more complex input, such as handwriting>>> need special software

  10. Examining Input Devices • What if I want to input a drawings made by hand or in a magazine article? • Use scanner to capture the data and create a digital file in one of the acceptable graphic file format.

  11. Examining Input Devices • Can I enter data by speaking? • Microphone: is an input device that converts spoken words or sounds information into a digital format.

  12. Examining Input Devices • Are digital cameras input devices? Yes • Digital camera captures images • Digital video camera captures moving images and sound

  13. Thank you • Questions !!!

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