2: Input and Output devices

Question 0

What is a Concept Keyboard?

Answer 0

A keyboard that uses icons or phrases instead of standard letters.

They are tamper proof preventing people from keying in information which could corrupt the system

Question 1

Keyboard

(Input or Output?)

(Uses?)

(Advantages/ Disadvantages)

Answer 1

Input data

Typing commands

Advantages: easy to do visual verification

Disadvantages: users with limited arm/wrist use find it hard to use

Question 2

Define: Numeric Keypads

(Input or Output?)

(Uses?)

(Advantages/ Disadvantages)

Answer 2

User to enter numbers only

Used at ATMs(Automatic Teller Machines), and for PINs (Personal Identification Number). Also at EPOS s (Electronic Point of Sales) terminal just invade the barcode reader doesn’t work

Question 3

Define: Mice and Optical Mouse

Answer 3

Mice are examples of pointing devices.

Optical Mouse is a mouse that works when movement is detected by reflected light rather than the position of a moving ball.

Question 4

Define: Touchpad

Answer 4

Used in laptop as a pointing device

Question 5

Define: Tracker Ball

Answer 5

Tracker balls are similar to a mouse, except the ball is on top of the device. Pointed used by rotating the ball.

Question 6

Define: Joysticks

Answer 6

A pointer device used by gripping the stick and moving it. Control is in three dimensions.

Question 7

Define: Magnetic Strip Readers

(Input or Output?)

(Uses?)

(Advantages/ Disadvantages)

Answer 7

The stripe contains useful information, such as the account number, sort code, expiry date and start date.

Credit cards used by ATMs or EFTPOS(electronic funds transfer point of sale) terminals.

Used for security cards and entry to buildings and hotel rooms