Input Devices

Question 1

Keyboard

Answer 1

Input device. Has keys which when pressed send a digital code to the computer. Gives computer commands.

Question 2

QUERTY

Answer 2

Standard layout for a keyboard.

Question 3

Mouse

Answer 3

Input device. Hand is used to move mouse on a flat surface which makes the cursor on screen move. Movement is detected by sensors or a rotating ball.

Question 4

Trackerball

Answer 4

Works like an upside down mouse. It stays still, the user moves the ball and makes the cursor move.

Question 5

Tracker pad

Answer 5

Aka touch sensitive pad. User moves fingers on pad to make cursor move. Used on laptops.

Question 6

Joystick

Answer 6

Like a mouse but is used for gaming. Also used for hospital scanners, CCTV cameras, construction equipment.

Question 7

Digital camera

Answer 7

Light is received through the lens, converted into digital signals. Photographs can be stored on a computer, printed or changed.

Question 8

Advantages of digital cameras

Answer 8

No film, can take photos over and over. Can see picture immediately on PC. Able to edit photos and print photos without needing to process the film. Can take more photos than on film.

Question 9

Methods of transferring images from a digital camera.

Answer 9

Bluetooth. Plug a USB cable from the camera into the computer. Use a card reader.

Question 10

Scanner

Answer 10

Scans a page: light moves across the page, reflected light picks up the image, image is transmitted to the computer. Images can then be edited etc.

Question 11

Touch screen

Answer 11

User touches screen, infrared sensors detect position.

Question 12

Advantages of touch screens

Answer 12

Don’t require a keyboard and mouse. Easy to use. No training needed. Easy to reprogram if changes need to be made.