Module 1.3 hardware

Question 1

The information processing cycle (input)

Answer 1

They use a gift the computer input using the mouse and keyboard 

Question 2

The information processing cycle (output)

Answer 2

The computer gives feedback on the results of its processing

computer output is usually pictures or text on the screen, sound or printing on a paper 

Question 3

The information processing cycle (processing)

Answer 3

The computer works on the data example calculating, sorting, searching ETC

the part of the computer that does all the processing is the CPU (central processing unit)

Question 4

The information processing cycle (storage)

Answer 4

Storage let us keep a permanent record of our work. it receives output and can provide input for the computer. storage is internal (example hard disk) or portable (flash drive) 

Question 5

The information processing cycle (communication)

Answer 5

Computers linked to other computers can communicate. communication can provide input and output for the computer 

Question 6

Input

Answer 6

Is the data and instructions that are given to a computer

Question 7

Why do computer need data

Answer 7

Because without data there is nothing to process

Question 8

Special keys for keyboards

Answer 8

F1- usually opens the help screen for the program you’re working in

Esc - the escape key let you get out of the options or cancel choices

Print screen- enable your computer to take a photo of everything that is displayed on the screen at the moment 

Question 9

Advantages of wireless devices

Answer 9

There is less clutter as there are no cables

you have a wider range of movement

Question 10

Disadvantages or limitations of wireless devices

Answer 10

-They require batteries
-they are slightly more expensive than wired devices
- they can easily be removed so they’re easily stolen

Question 11

Size of a monitor

Answer 11

The size of a monitor is measured diagonally in inches from one corner to the other 

Question 12

Resolution

Answer 12

Resolution refers to the number of pixels used to form the screen imag

The resolution is measured horizontally and physically in pixels

1920 x 1080 means rows of 1920 across the screen and 1080 pixels vertically down the screen

Question 13

Graphics card

Answer 13

The image has to be generated by specialised circuitry that we called the graphics card

Question 14

Response time

Answer 14

The response time of a monitor is the time it takes to change a pixel from one colour to another and it’s measured in millisecond 

Question 15

Connecting monitors

Answer 15

Monitors used to connect only via the VGA port

Question 16

HDMI

Answer 16

High definition multimedia interface

Question 17

Two types of printers

Answer 17

Inkjet and laser printer

Question 18

Inkjet printers

Answer 18

-Spray microscopic dots of ink onto the paper
- are relative cheap to buy
- use Ink cartridge that are generally individual cheaper than laser cartridge but they can be more expensive to use in the long run because they need to be replaced more frequently than the laser cartridge
-are capable of producing good quality colour printout such as photographs
-are generally still slightly slower than the laser printer 

Question 19

Laser printers

Answer 19

-Works like a photocopier machine (using toner instead of ink)
- generally more expensive to buy then the ink jet printers
- are generally cheaper to run then inkjet printers when printing large volumes
- generally prints faster than the inkjet printers


Question 20

Printer queues

Answer 20

When you send a print task to the printer it is temporarily stored in the hard drive where it wait until the printer ready to print it 

Question 21

RAM

Answer 21

Random access memory

Question 22

Storage medium

Answer 22

The actual physical material or objects on which we store the data and program

Question 23

Drives

Answer 23

Computer hardware that read from and write to storage media are the storage devices

Question 24

Storage capabilities

Answer 24

A kilobyte (KB) is 1024 bytes
A megabyte (MB) is 1024 KB
A gigabyte (GB) is 1024 MB
A terabyte (TB) is 1024 GB

Question 25

Hard drives

Answer 25

The main and largest storage device of a computer located inside the computer case 

Question 26

Flash drive

Answer 26

Storage devices that uses electronic memory to store data

Question 27

RSI

Answer 27

Repetitive strain injury

Question 28

Repetitive strain injury

Answer 28

Injuries resulting from fast repetitive actions 

Question 29

Health tips for using computers

Answer 29

-Sit Correctly
-make sure the lighting is sufficient
-take regular breaks
- adjust the height of your seat
-Make sure the monitors not distance too close to your eyes 
-occasionally turn your eyes away from the monitor 

Question 30

Green computing

Answer 30

Green computing is a term used to describe using computers in a way that is sensitive to the environment 

Question 31

Tips on how to practice green computing

Answer 31

Try save power

Try to upgrade automate old hardware

don’t waste paper

Recycled used ink and toner cartridges responsibly

Check if you can refill and reuse ink and toner cartridges

Question 32

Ergonomics

Answer 32

Ergonomics is about designing things like chairs, desks, and tools to make them comfortable and safe for people to use. It’s about making sure things fit well with how our bodies move and work, so we can avoid injuries and be more productive. For example, an ergonomic chair supports your back and helps you sit in a way that’s good for your posture.

Question 33

What is meant by the term default printer

Answer 33

The term “default printer” refers to the printer that your computer or device automatically uses whenever you print something