1. Which of the following is NOT a modifier key? SHIFT CTRL ALT BACKSPACE 2. Wit

Question

1. Which of the following is NOT a modifier key?

SHIFT

CTRL

ALT

BACKSPACE

2. With a pen-based system, you can use the pen as a(n) ____________, to select commands.

keyboard

pointing device

antenna

microphone

3. This type of technology lets computers use light as a source of input.

optative

optical

optimal

optional

4. ______________ are well suited for auntomated teller machines (atms) or public information kiosks.

Touch screens

Joysticks

Microphones

Monitors

5. This type of monitor can display only one color, such as white against a black background.

grayscale

monochrome

color

SVGA

6. When you choose a monitor, look for one with a dot pitch that is no greater than ________.

.18mm

.28mm

.38mm

.08mm

7. A laser printer works like this device.

typewriter

dot matrix printer

photocopier

fax machine

8. ______________ is a system for exchanging messages through a computer network.

Email

The control unit

The machine cycle

The information processing cycle

Explanation / Answer

Answers:

1.Backspace:

Modified keys are used in combination with other keys in keyboard to change.

Function,Shift,Alt,Ctrl are modifier keys.

2.Keyboard

With the help of pen,we can write the letters by hand and computer recognises them.

3.Optical

OPtical fibres in which light is transmitted as a signal.Nowdays internet is transmitted through optical fibres

4.Touch Screens:

Touch screens because user can interact with touch screen.For eg:,Witdrawing the money you have to enter the money on the touc screen in the ATM

5.)GRAYSCALE MONITOR

Grayscale monitors displays white on black.They are used in XRAY labs.

6.).28 mm

Dot pitch is used for measuring sharpness of the dots used in monitor.It wont be pleaseful to see if it is more than .28mm

7.)Photocopier

Because In Laser printer and photocopier,light is used to print on the paper.

8.) Email is used to send communication over internet to one email address to single or more email addresses

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