Lesson 2- The Computer

Question 1

A ____ system is made up of various elements.

Answer 1

COMPUTER

Question 2

Elements of a Computer?

Answer 2

• Input Devices
• Output Devices
• Virtual Reality
• Physical Interaction
• Paper
• Memory
• Processing

Question 3

Type of Computer(3)?

Answer 3

• Desktop
• Laptop
• PDA (Personal Digital Assistant)

Question 3

Our first generation of computer uses ____ ?

Answer 3

BATCH PROCESSING

Question 4

Types of Keyboard?(2)

Answer 4

• QWERTY
• DVORAK

Question 5

Most common text input device.

Answer 5

KEYBOARD

Question 6

Text can be input into the computer, using a pen and a digesting tablet.

Answer 6

HANDWRITING RECOGNITION

Question 7

For entering numbers quickly: ex. Calculator , PC Keyboard.

Answer 7

NUMERIC KEYPADS

Question 8

Device use for pointing, positioning, and drawing.

Answer 8

MOUSE

Question 9

2 types of Mouse?

Answer 9

• Mechanical
• Optical

Question 10

Small touch sensitive tablets. Used mainly in laptop computers

Answer 10

TOUCHPAD

Question 11

indirect pressure of stick, buttons for selection on top or front like a trigger.

Answer 11

JOYSTICK

Question 12

for laptop computer. Miniature joystick in the middle of the keyboard.

Answer 12

KEYBOARD NIPPLE

Question 13

Detect the presence of finger or stylus on the screen.

Answer 13

TOUCH-SENSITIVE SCREEN

Question 14

Control interface by eye gaze direction.

Answer 14

EYE GAZE

Question 15

Four keys (up, down, right, left) on keyboard.
Inverted “T”.

Answer 15

CURSOR KEYS

Question 16

number of pixels on screen.

Answer 16

Resolution

Question 17

ratio between width and height.

Answer 17

Aspect Ratio

Question 18

it tells how many different colors for each pixels.

Answer 18

Color Depth

Question 19

diagonal lines that have discontinuities in due to horizontal raster scan process.

Answer 19

Jaggies

Question 20

Softens edges by using shades of line color.

Answer 20

Anti-aliasing

Question 21

Stream of electrons emitted from electron gun, focused and directed by magnetic fields, hit phosphor-coated screen which glows.

Answer 21

Cathode Ray Tube

Question 22

Thin flexible sheets, updated electronically but retain display.

Answer 22

Digital Paper

Question 23

Beeps , bongs, clonks, whistles and whirrs.
Used for error indications.

Answer 23

Sounds

Question 24

Types of printers?(3)

Answer 24

• Dot-matrix printers
• Ink-Jet printers
• Laser printers

Question 25

Can convert it all into a bitmap and sent to the printer.
Different fonts, bitmaps , lines , digital photos etc.

Answer 25

Page Description Languages

Question 26

Aim of word processing, etc.
WYSIWYG (What you see is what you get).

Answer 26

Screen
and Page

Question 27

Take paper and convert into a bitmap

Answer 27

Scanners

Two types: Flat-bed and Hand-held

Question 28

Converts bitmap back into text.
Create problem for simple “Template matching” algorithms

Answer 28

Optical Character Recognition(OCR)

Question 29

____ is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device’s processor.

Answer 29

Random Access Memory (RAM)

Question 30

is a type of non-volatile memory used in computers and other electronic devices.

Answer 30

Read-only Memory (ROM)

Question 31

is a memory management technique where secondary memory can be used as if it were a part of the main memory.

Answer 31

Virtual Memory

Question 32

Reduced amount of storage required

Answer 32

Compression

Question 33

____ the law where is said that computers get faster and faster.

Answer 33

Moore’s Law