examining input devices
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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 . - PowerPoint PPT PresentationTRANSCRIPT
Examining Input Devices
Computer ConceptsUnit 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.– A computer keyboard includes the basic typing
keypad with keys or buttons with letters and numbers.
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.
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
buttonLeft mouse
button
Additional Buttons
Examining Input Devices
• Do all mice use the same technology?– Wired mouse– Wireless mouse
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.
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.
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
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.
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.
Examining Input Devices
• Are digital cameras input devices?Yes
– Digital camera captures images– Digital video camera captures moving images and
sound
Thank you
• Questions !!!