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CAT June Exam💻 > Exploring A Computer > Flashcards

Exploring A Computer Flashcards

1
Q

What is a computer?

A

Electronic device that is used more and more in modern society

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2
Q

What is the process system in a computer?

A

Input: Receive data
Process the data and program inside computer will say exactly what it needs to do
Output: deliver results you were hoping for

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3
Q

What are some examples of computers?

A 
Cellphones 
Tablets
Laptops 
Washing machines
Cars
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4
Q

How does a computer operate?

A
  • computer can process 3 kinds of data, viz. numerical, graphical and character data
  • the principle of GIGO( garbage in garbage out) applies - if your input is not correct the output with also be incorrect. The opposite also applies
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5
Q

How does the processing of data work?

A

Input : Keyboard, mouse, touchscreen
Processing of data : Central Processing Unit ( CPU)
Storage : CD’s, Flash drive, hard drive
Output : monitor/screen, Printer

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6
Q

What is the hardware of the computer?

A

All the parts that are visible

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7
Q

What are some examples of hardware?

A 
Hard drive 
“Tower” ( system unit ) 
Keyboard  
Mouse
Monitor
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8
Q

What are peripherals?

A

Components that are attached to the system unit

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9
Q

What are the different devices for the input and output groups?

A

Input : modem, scanner, microphone, cellphone

Output : can be stored in/on different devices

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10
Q

What is the motherboard?

A

Platform of the system where the memory, scanner, hard drive , CD drive, keyboard, mouse, local area network and all other computer components are interconnected

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11
Q

What is the system unit?

A
  • processor in the motherboard refers to the chip fitted in the mother/circuit board - THIS IS THE HEART AND BRAIN
  • the faster the processor the better the performance - faster the input data will be processed into info
  • data and instructions are processed by the CPU
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12
Q

What is the speed measured in?

A

Megahertz (MHz)

Gigahertz ( GHz)

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13
Q

What is memory?

A
  • Storage space for lists of instructions

* starts capacity measured in bytes

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14
Q

What is the smallest storage unit?and where did the name come from?

A
  • Bit

* Binary digIT

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15
Q

How many bits are in 1 byte?

A

8

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16
Q

What words are BYTE derived from?

A

BinarY digiT Eight

17
Q

What is ROM?

A
  • Read Only Memory
  • contains the program with all the instructions to preform the basic input and output functions
  • data can’t be changed only read
  • ROM is permanent and retains its info even when power is switched off
  • when computer is switched on it reads the instructions from the ROM chip first
18
Q

What is RAM?

A
  • Random Access Memory
  • contains programs that are run by the computer as well as the data with which the programs work
  • temporary memory and volatile info can be lost in power cut
  • save documents often
19
Q

What is a storage device?

A

Read it read and write data to and from the storage media

20
Q

What is the most common type of keyboard?

A

QWERTY

21
Q

What is a LCD/LED monitor?

A

Flat and mounted against the wall

22
Q

What are pixels?

A

Number of dots needed to form a picture

23
Q

What is printing speed measure in?

A

Ppm pages per minute

24
Q

Where is the word modem derived from?

A

Modulator and demodulator

25
Q

What is the purpose of the modem?

A

Connects the computer to the rest of the world by means of telephone line, 3G connection or broadband

26
Q

What is a scanner?

A

Operates same way as a photocopier

27
Q

What are the types of software?

A

System software

Application software

28
Q

What is an example of a Windows operating system

A

Windows 8

Windows 7

29
Q

What links the user, hardware and software?

A

Windows

30
Q

What is GUI?

A

Graphical User Interface

Small pictures, windows, buttons, menus, groups and commands are used

31
Q

Give one advantage of Windows

A

Super user-friendly and can be easily adapted more than one app can be open at a time

32
Q

What is utility software?

A
  • AIDS the running of a computer

* designed to help analyze, configure, optimize and maintain the computer

33
Q

What is an example of utility software?

A

Disk clean-up
Disk defragmenter
Magnifier
Narrator

34
Q

Give one example of utility software that has to be installed

A

Antivirus program

35
Q

What is application software?

A

Programs that have been developed to assist the end-user in competing specific tasks

36
Q

When only can application software be used?

A

After the windows operating system has been installed

37
Q

What are some examples of application software

A 
Word 
Excel 
PowerPoint 
Outlook 
OneNote

CAT June Exam💻 (2 decks)

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