Workbook spn21

Computer Studies SPN 21 Form 1 (Work Book)

1. Introduction to computers 2

2. Computer Lab Personal safety rules 4

3. Basic principles of computers 5

4. Parts of computer 6

5. Computer System Electrical Connections 7

6. Care for computer systems, storage media and simple health issues 8

7. Input Devices (Manual) 10

8. Input Devices (Automatic) 13

9. Output Devices 14

10. Storage devices 16

11. Troubleshooting Computers 17

12. Bits and Bytes 18

13. Types of computers 19

14. Types of Software 20

15. E-mail 21

16. Basic of Windows 23

17. Internet 26

18. Graphics 27

19. Word Processing 28

Prepared By : Juliet Hoh Page 1

1. Introduction to computers

EXERCISE 1A

Survey Form

1. What is the type of the computer you are using ?
desktop
laptop
Personal Digital Assistant
Others, please specify ________________

2. What operating system is used in your computer ?
Windows 98
Windows ME
Windows XP Home Edition
Windows XP Professional Edition
Windows Vista
MAC OS

3. Are the following devices available in your computer?
Floppy disk Drive
CDRM drive / CDRW drive
DVDROM drive / DVDRW drive
Card reader

4. Have you ever used the following applications? (you may tick more than one).
Word processing packages
Spreadsheet packages
Database packages
Graphic packages
Presentation graphic packages
Others, please specify _________________

5. How many bytes does your computer hard disk have? ________ Gigabytes / Terabytes

6. What is the size of the RAM? _______ Megabytes / Gigabytes

7. Have you heard and use the following computer accessories/peripherals?
Scanner
Microphone
Speaker
Digital camera
Web camera
Printer
Others, please specify _________________


EXERCISE 1B
Understanding some terms

1. Tick the definition of computers.

Computers are objects Computers are devices
that are small in size, that have the ability to
shaped like a box, input, process, output,
have a display unit and and store memory.
run on electricity. □ □
2. Use the given clues to complete the crossword puzzle.

Across 3□
1. The computer takes in data and instructions. 1□ □□□□ 4
2. The computer works with the data. □ □
Down 2 □□□□ □□□
3. The computer produces information. □ □
4. The computer can store data and programs. □ □
□
□
3. Tick the definition of programs.

Programs are sets of Programs are the
Instructions that tell the physical parts of the
Computer what to do and computer system such as
How to do it. □ monitor and keyboard. □

4. Which characteristics allow this machine to be considered a computer ? Tick the answers.

(a) It can talk. □
(b) It is tall. □
(c) It has a head, a body and 4 limbs. □
(d) It can produce information. □
(e) It can stand on 2 feet. □
(f) It can receive commands. □
(g) It can work on the commands □
(h) It can move. □


2. Computer Lab Personal safety rules

1. Explain what can be happen when the computer break down.

__________________________________________________________________

__________________________________________________________________

2. State at least 2 rules in your computer laboratory.

__________________________________________________________________

__________________________________________________________________

3. Explain how each rule in (2) helps to take care of computers.

__________________________________________________________________

__________________________________________________________________

4. Use this checklist as a guide to safe and healthy computing.

□ Sit comfortably at your desk.

□ The chair should suit the height of the desk.

□ Lower back, feet and thighs should be supported.

□ Knees bent at right angles.

□ Clearance between desk and thighs.

□ Monitor positioned centrally on the desk.

□ Minimise glare and reflections of monitor.

□ Your eyes should be approximately 50 cm away from your monitor.

□ Good lighting to comfortably read instructions without reflections on the screen.

□ Take regular breaks from looking at the monitor.

□ All electrical pads and plugs installed properly.

□ Keep fingers out of internal parts of the computer or peripherals.


3. Basic principles of computers

1. The block diagram of a computer is shown below. It shows the four operations in data
processing. Label the blocks using the terms : input, storage, output, processor.

2. Briefly explain the meaning of each of the following terms.

(a) Input : ___________________________________________________

(b) Output : __________________________________________________

(c) Processor : _______________________________________________

(d) Data :____________________________________________________

(e) Information : ______________________________________________


4. Parts of computer

Hardware and Software

In order to work with the data fed into it, a computer needs both hardware and software.
Hardware is the physical parts of a computer that can be seen and touched. The most
important part of the hardware is the CPU (Central Processing Unit).

1. Name five pieces of computer Hardware.

(i) ___________________________ (ii) ______________________________

(iii) __________________________ (iv) ______________________________

(v) __________________________

2. Name five pieces of computer software.

(i) ___________________________ (ii) ______________________________

(iii) __________________________ (iv) ______________________________

(v) __________________________

3. What computer software would you use to :

(a) draw a picture ? ___________________________

(b) create a database ? ___________________________

(c) type a story ? ___________________________

(d) surf the Net ? ___________________________

(e) send an email ? ___________________________

4. Name the four main parts of a computer.

(i) ___________________________

(ii) ___________________________

(iii) __________________________

(iv) ______________________________


5. Computer System Electrical Connections

1. Why is a monitor usually powered from the system unit ?

(a) A monitor needs only very little power to function.

(b) A monitor needs only half as much power as the system unit to function.

(c) A monitor needs a large amount of power to function.

(e) A monitor powered from the system unit can share the same power point as the system
unit.

2. Why is it not advisable to connect a system unit together with a few peripherals to a
single wall socket ?

(a) It can cause electrical hazards.

(b) Each peripheral will draw less power.

(c) Only the system unit will work but not the peripherals.

(d) Neither the system unit nor the peripheral will work.

3. Match the following items.

(a) Electrical wire * Starting the system

(b) Booting * Sockets for I/O units and power supply

(c) Back panel * Cooling the system unit

(d) Fan * Cable

4. Briefly describe the normal procedure of starting a computer system.

__________________________________________________________________

__________________________________________________________________

5. Computers sometimes need to be restarted when errors occur. This happens when a
computer ‘hangs’, that is, when it stops processing. Do you know the keys that will restart
the computer without turning off the power ? Locate these keys on the keyboard.

_________________________________________________________________

__________________________________________________________________

__________________________________________________________________

6. Care for computer systems, storage media and simple health issues

EXERCISE 6 (Part 1)

Storage

1. True or false ?

(a) CD-ROMs can store the same information as 200 floppy disks. ( )

(b) Floppy disks are gradually replacing CD-ROMs. ( )

(c) Dust can damage a hard disk drive. ( )

(d) It’s not possible to have an external hard disk drive. ( )

(e) A hard disk drive ‘crash’ can destroy your data. ( )

2. Use your own words to explain the following terms.

(a) read-only _________________________________________________

(b) retrieve _________________________________________________

(a) read/write head ____________________________________________

(a) multimedia software __________________________________________

(a) ‘crash’ _________________________________________________

3. Which storage device would be most suited to the following tasks ?

(a) Storing two pages of text for a friend to take home ______________

(b) Storing a video of your last school sports day ____________________

(c) Taking your homework to school to print out on the class computer __________

(d) Storing you your favourite computer game _______________

EXTRA: There are now other storage devices being developed.
See if you can find out about :

* FireWire drives * Zip drives * Jazz drives


EXERCISE 6 (Part 2)
1. Draw lines to show data is stored in each of the following storage media devices.

Storage media Material
Diskette Aluminium foil
Hard Disk Memory chips
CD-R Layer of dye
CD-ROM Plastic disk
Thumb Drive Metallic disk

2. Arrange the storage media in Part 1 in order of low to high heat tolerance.

Highest tolerance ______________
_____________
________________
________________
_________________
Lowest tolerance ______________

3. Magnets can cause some types of storage device to malfunction. Circle the storage devices that
can be easily damaged by magnets.
Diskette Hard disk CD-R CD-ROM Thumb drive

Explain your answer.
__________________________________________________________________

__________________________________________________________________

4. Use the following media terms to answer the questions that follow.
Hard disk Thumb drive Floppy disk DVD CD

Which of the above

(a) has the greatest storage capacity ? ______________
(b) has the greatest speed ? ______________
(c) is the most expensive ? ______________
(d) is the most cost effective ? ______________
(e) is the most portable ? ______________
(f) is the most widely-used ? ______________
(g) are water-proof ? ______________
(h) is heat-proof ? ______________
(i) are dust-proof ? ______________


7. Input Devices (Manual)

EXERCISE 7 (Part 1)

1. Write these abbreviations in full.

a. CPU ___________________________

b. OS ___________________________

c. VCR ___________________________

d. WWW ___________________________

2. Write the devices in the order that you would use them to :

* computer *monitor * keyboard * mouse

* joystick * printer * scanner * microphone

(a) scan a picture _______________________________________________

(b) write a letter _______________________________________________

(c) record a sound _______________________________________________

3. Use the text to fill in the missing letters.

(a) c r __ __ t __ __ (b) __ e __ __ __ a __ d

(c) __ e s __ t __ p (d) g r __ __ h __ __ s

(e) m __ __ __ t __ r (f) __ __ t t __ __ y

4. Arrange these in order of size, from smallest to largest.

Mini-tower, laptop, PDA, tower, desktop

_______________________________________________________



EXERCISE 7 (Part 2)

Input and Output

What you put into a computer (input) controls what you get out of it (output). The equipment which
you use to put information (called data) into a computer is called input devices. The equipment we
use to get out of the computer is called output devices.

1. Here are some input devices. Write the missing letters.

(a) K __ __ __ __ __ __ d (b) j __ __ s __ __ __ __

(c) __ __ u __ e (d) s __ __ n n __ r

2. Here a re some input devices. Write the missing letters.

(a) las __ __ p __ __ n __ __ r (b) __ __ n __ t __ __

(c) sp__ __ k __ __ __ (d) ink __ __ t p __ __ __ t __ __

3. Name five pieces of data you could input into a computer.

(i) ___________________________ (ii) ______________________________

(iii) __________________________ (iv) ______________________________

(v) __________________________

4. Explain, in your own words, the difference between an input devices and an output device.

5. Sort these devices into the correct column.

* scanner * printer *keyboard * mouse ** monitor * joystick * speakers

Input Device Output Device


EXERCISE 7 (Part 3)

Computer Terminology

1. Match the words to the correct definition.

PROGRAM The information put into a
Computer though input devices

DATA The brains of the computer

SOFTWARE A group of eight bits

CENTRAL PROCESSING UNIT Where all the important work is
done. It carries out all the
calculations to process the data.

MATHS UNIT Small graphic images or pictures
Used to represent commands.

RAM The instructions given to a
computer to make it work.

BYTES The program a computer needs
To process the data it is given.
GIGABYTES The computer’s memory. Can be
compared to your desktop.

ICONS Approximately equal to 1000
Megabytes.


8. Input Devices (Automatic)

1. Which one of the following information cannot be obtained from the UPC of a product
sold in a supermarket ?

(a) Weight (b) Supermarket name
(c) Product type (d) Price

2. The most popular input device used for playing video games is a __________.
(a) mouse (b) keyboard
(c) joystick (d) bar code reader

3. Which input device is used to enter textual data into the computer ?
(a) keyboard (b) joystick
(c) mouse (d) bar code reader

4. Which one of the following devices is not used to control the cursor ?
(a) Scanner (b) joystick
(c) mouse (d) keyboard

5. Fill in the blanks with the appropriate words given in the box below.
Bar codes Joystick Digital camera
Scanner Input Mouse

(a) We communicate with computers through ______________ devices.

(b) A _____________ is an input device that controls the cursor on the screen.

(c) The black and white lines on certain books and goods are called ________________.

(d) Text and graphic data can be entered into a computer using an input device called a
___________.

(e) A __________ is commonly used when playing computer games.

(f) A device used to record images into digital form that can be transferred to a computer is
called __________.

6. Data is usually input into a computer through a hard disk. (Yes / No)

7. ASCII codes are commonly used in supermarkets. (Yes / No)

8. MICR is used _________________________________________________________.

9. OCR best used in ______________________________________________________.


9. Output Devices
1. A chart, graph or text printed on paper is called a ___________.

(a) hardware (b) software
(c) soft copy (d) hard copy

2. Pixels are associated with ______________.

(a) sound (b) speech
(c) graphics (d) brightness

3. LCDs are used in ___________.

(a) portable computers (b) minicomputers
(c) mainframe computer (d) supercomputers

4. Which one of the following devices has the fastest printer speed ?

(a) Dot matrix printer (b) ink-jet printer
(c) Laser printer (d) Plotter

5. Which one of the following types of monitor has a screen with very high resolution ?

(a) CGA (b) SVGA
(c) VGA (d) EGA

6. Fill in the blanks with the appropriate words given in the box below.

Dpi resolution output ppm
Pixels sounds COM plotter

(a) The information we get fro the computer is called the __________________.

(b) A monitor screen is made up of dots called ______________.

(c) The quality of the pictures displayed on the screen is dependent on the screen
__________.

(d) Printer resolution is measured in _____________.

(e) a voice synthesizer produces _____________.

(f) Information from a computer can be recored on microfilm. This form of output is called
__________.

(g) The speed of the ink-jet printer is measured in __________.

(h) A __________________ produces its output using pens.


7. (a) There are two categories of monitors : monochrome and colour.

(i) What does monochrome mean ?
__________________________________________________________________

(ii) Name the four types of colour monitors.
__________________________________________________________________

(iii) Which one of the four types of colour monitors named in (ii) gives the best resolution ?
__________________________________________________________________

(b) Portable computers use a type of monitor that is very thin.

(i) Give the full name of this type of monitor.
__________________________________________________________________

(ii) State one advantage of using this monitor.
__________________________________________________________________

8. Define the following terms.

(a) Fanfold paper : _________________________________________________

(b) Screen resolution : ______________________________________________

(c) cps : ____________________________________________________

(d) ppm : ___________________________________________________


10. Storage devices

1. Match the following items.

(a) Permanent storage Printout

(b) Hard copy Microchip

(c) Processor Screen display

(d) Main memory I/O units

(e) Mouse Temporary memory

(f) Peripherals Physical components

(g) LOGO Hard disk

(h) Hardware Programming language

(i) Software Pointing device

(j) Cursor Natural Language

(k) Greek Blinking dash on the screen


11. Troubleshooting Computers

1. What should you do when the following computer problems happen ?

(a) When turning on the machine, the following message appears :

Non-system disk or system error
Replace and strike any key when ready

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

(b) During your work session, the following message appears :

Not enough memory / insufficient memory

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

(c) Your machine has stopped responding to keyboard strokes and mouse clicks. It has
“frozen” or “hung”.

__________________________________________________________________

__________________________________________________________________


12. Bits and Bytes

1. Use the given words to compete the concept map on memory and storage media.

Secondary storage media CPU CD-ROM
To store data and programs permanently floppy disk hard disk
Thumb drive main memory hard disk

Data in computers are stored in either the

________________(also known as or ____________________________
Random access memory) ____________________________

A working area for storing program _____________________________
Instructions and data currently used _____________________________
By the _________________

Example : ____________________
_____________________________

2. State one advantage and one disadvantage of a hard disk.

Advantage : ____________________________________________________________

Disadvantage : __________________________________________________________

3. State one advantage and one disadvantage of a RAM.

Advantage : ____________________________________________________________

Disadvantage : __________________________________________________________


13. Types of computers

1. Complete the sentences by unscrambling the words.

Tiny computers can be found inside some modern home appliances. These are called
_________________ (deddbeme) _____________ (sorsespro). Each is built to do special
kinds of jobs. We call them ______________(posepur-cialspe) computers. They cannot be
used for other jobs.

2. List three factors that had limited the use of embedded processors in household
appliances in the past.

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

3. Circle the part of an aeroplane which you think uses embedded processors.

Wing Wheels Navigator
Landing gear Fuel tank Fuel pump


14. Types of Software

1. Use the given words to complete the graphic organizer that follows.

Application Microsoft Word Microsoft Windows
Operating System Macromedia Flash Mac OS

Software

System software _________________ software
- program that control all - program that are designed to help you
The activities taking place perform specific tasks such as writing reports
In a computer system and producing multimedia presentation

________________ Utility software 2 example :
-programs that control the - programs that perform _________________
Flow of data between parts tasks such as disk- _________________
Of the computer system and checking and virus _________________
Perform housekeeping tasks detection
Such as saving files and
Formatting disks

2 examples : 2 examples :
_________________ Norton Disk Detector
_________________ McAfee Virus Scan
_________________

2.Look at the different application software. Find out their uses.

Name of application software Use
(a)

(b)

(c)

(d)

(e)

(f)


15. E-mail

1. What is e-mail ? Give 5 important components of an e-mail message.

__________________________________________________________________

__________________________________________________________________

2. What is an email account ?

__________________________________________________________________

__________________________________________________________________

3. What is an e-mail client ? State one example of an e-mail client.

__________________________________________________________________

__________________________________________________________________

4. State one “DO” and one “DON’T” on e-mail etiquette.

DO : _____________________________________________________________

DON’T : _____________________________________________________________

(5) Write down the sequence of steps to explain how e-mail works.

__________________________________________________________________

__________________________________________________________________


QUESTION A :
You have received an email and wish to send a copy of it to a friend. What icon (button)
would you use to do this in your email software?

• A = forward B = reply C = back D = reply all

QUESTION B :
There is usually a facility to be able to 'add' the sender's address of an email you have
received to your address book rather than you having to type it out. Give two reasons why
this 'add' button is better than typing out the address.

QUESTION C :
Email has several benefits to people who use it. Choose from the following list those
features that are BOTH true AND a benefit (not all are) and then explain why each is of
benefit.

1. Speed: quick delivery of the email
2. Ability to send copies to different people at the same time
3. Can include pictures
4. No cost
5. Ability to spell check the email

QUESTION D :
Email does have some drawbacks - some people say that they have some concerns.
Discuss 4 features of email that they could be thinking about.


16. Basic of Windows

1. Explain the following terms.

(a) Windows :

__________________________________________________________________

__________________________________________________________________

(b) Windows Explorer :

__________________________________________________________________

__________________________________________________________________

(c) GUI :

__________________________________________________________________

__________________________________________________________________

(d) Icon :

__________________________________________________________________

__________________________________________________________________

(e) Start button :

__________________________________________________________________

__________________________________________________________________

(f) Recycle Bin :

__________________________________________________________________

__________________________________________________________________

2. A mouse is a pointing device.

(a) List four basic operations which you can do with a mouse.

__________________________________________________________________

__________________________________________________________________

(b) What is the use of the left button of the mouse ?

__________________________________________________________________

(c) What is the use of the right button of the mouse ?

__________________________________________________________________

(d) Besides the mouse, give another example of a pointing device.

__________________________________________________________________

3. The path name of a file is given below :

C:WindowsLettersMary.doc

(a) What is the disk name ?

__________________________________________________________________

(b) What is the folder name ?

__________________________________________________________________

4. Dos stores information in files. Each file is identified by its file name and file type.

(a) Name the three parts of a file name.

__________________________________________________________________

(b) What is the maximum number of characters allowed for each part of a file name ?

__________________________________________________________________

(c) What characters cannot be used for file names ?

__________________________________________________________________

(d) Name any two file types which you are familiar with.

__________________________________________________________________


5. Which one of the following is not a GUI item ?

(a) Windows (b) Menu

(c) Icon (d) Screen

6. To run a program represented by an icon, you should point to the icon by moving the
mouse and _______________.

(a) click the mouse button once.

(b) click the mouse button twice.

(c) click the mouse button thrine.

(d) drag the icon to a new position.

7. When a file is deleted from the hard disk, it is stored temporarily in the

(a) Windows. (b) Menu.

(c) Recycle Bin. (d) Temp folder.


17. Internet

QUESTION A
The world wide web - or Internet - has been around in common use now since the early mid
1990's. In your own words, describe what the internet is.

QUESTION B
Now explain what the internet allows you to do (give at least 4 examples and an example for
each one).

QUESTION C : Match up the statements for each column.

A B

Cable (fibre or copper) that is the physical connection between your
Browser 1
computer and the wider communications network
Search
2 Area for you to talk with similar minded people
Engine
Internet Service Provider - provides the service that allows you to connect
Chat room 3
to other computers on the Internet
Modem 4 Software needed to stop virus programs being obtained from the Internet
Telephone
5 Sending data out from your computer
line
Broadband 6 Receiving data into your computer from the Internet
Dial up 7 A fast internet connection
Software that allows you to ask questions to find information on the
ISP 8
internet
Query 9 Needed to view web pages
Device that allows your computer to send and receive data via the
Download 10
Internet
Upload 11 Asking a question or doing a search
A piece of hardware or software that helps prevent unwanted access to
Firewall 12
your computer from outside
Virus
13 A method of connecting to the Internet using a 'slow' modem
checker


18. Graphics

1. List the two types of computer graphics.

__________________________________________________________________

2. (a) Give some uses of computer graphic in industry.

__________________________________________________________________

(b) State one advantage of using a computer to create graphics.

__________________________________________________________________

3. Indicate whether the following statements are true (T) or false (F).

(a) A bit-mapped image has a fixed number of pixels. ( )

(b) Microsoft Paint is an example of vector graphic program. ( )

(c) Engineers make sure of bit-mapped graphics to design buildings. ( )

(d) Vector graphics are formed by specifying the images in terms of lines, curves,
etc. ( )

4. List two differences between bit-mapped graphics and vector graphics.

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

5. Draw pictures using Microsoft Paint for the following situations.

(a) A visit to pyramids

(b) Zoo and animals

(c) Mountains and rivers

(d) Busy street in your town/village

(e) A beach


19. Word Processing

1. Which one of the following is not a document ?

(a) Letter (b) Poem

(c) Author (d) Essay

2. Entering text is also called ______________.

(a) deleting (b) creating

(c) modifying (d) copying

3. Which one of the following is not a feature of word processing program ?

(a) Formatting text (b) Inserting graphics

(c) Posting document (d) Editing text

4. The orientation of the page in which text is printed across the paper width is called
_______________.

(a) landscape (b) inverted

(c) normal (d) portrait

5. A header appears at the __________________________.

(a) bottom of every page (b) top of every page

(c) beginning of the first page only (d) end of the last page only

6. The File Save command saves a file ________________________.

(a) by a new name (b) by the same name.

(c) by a different name in a different folder or directory (d) all of the above.

7. Give three features of word processing package.

__________________________________________________________________

__________________________________________________________________


8. What are the two modes in which text is entered into a document ?

__________________________________________________________________

9. Expand the term ‘WYSIWYG’ and describe its significance in a sentence.

__________________________________________________________________

__________________________________________________________________

10. Indicate whether the following statements are true (T) of false (F).

(a) Word processing programs are designed with default settings. ( )

(b) Word wrap shifts text page by page. ( )

(c) Many pages of a document can be viewed. ( )

(d) Many word processors have on-line help. ( )

(e) Graphics can be inserted into a document just like text. ( )

11. Briefly explain the meaning of each of the following terms.

(a) Edit :

__________________________________________________________________

(b) Thesaurus :

__________________________________________________________________

(c) Spell check :

__________________________________________________________________

(d) Formatting :

__________________________________________________________________

(e) Scrolling :

__________________________________________________________________

(f) Word wrap:

__________________________________________________________________


(g) Indentation :

__________________________________________________________________

(h) Font :

__________________________________________________________________

(i) Block :

__________________________________________________________________

( j) Print Preview :

__________________________________________________________________

(k) Undo :

__________________________________________________________________

(l) Paste :

__________________________________________________________________

12. A newspaper classified sales clerk takes this advertisement over the phone:

FOR SALE: Second hand laptop, Intel Pentium M 760 Processor 2.0 GHz. £400. Excellent
condition. Phone John Smith 417639.

Describe five different features of a Word Processing package you could use to improve this
advert. (5 marks)


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