Workbook spn21

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1. Computer Studies SPN 21 Form 1 (Work Book)1. Introduction to computers 22. Computer Lab Personal safety rules 43. Basic principles of computers 54. Parts of computer…
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  • 1. Computer Studies SPN 21 Form 1 (Work Book)1. Introduction to computers 22. Computer Lab Personal safety rules 43. Basic principles of computers 54. Parts of computer 65. Computer System Electrical Connections 76. Care for computer systems, storage media and simple health issues 87. Input Devices (Manual) 108. Input Devices (Automatic) 139. Output Devices 1410. Storage devices 1611. Troubleshooting Computers 1712. Bits and Bytes 1813. Types of computers 1914. Types of Software 2015. E-mail 2116. Basic of Windows 2317. Internet 2618. Graphics 2719. Word Processing 28Prepared By : Juliet Hoh Page 1
  • 2. Computer Studies SPN 21 Form 1 (Work Book)1. Introduction to computersEXERCISE 1ASurvey 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 Others, please specify ________________ 3. Are the following devices available in your computer? Floppy disk Drive CDRM drive / CDRW drive DVDROM drive / DVDRW drive Card reader Others, please specify ________________ 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 _________________Prepared By : Juliet Hoh Page 2
  • 3. Computer Studies SPN 21 Form 1 (Work Book)EXERCISE 1BUnderstanding some terms1. Tick the definition of computers.Computers are objects Computers are devicesthat are small in size, that have the ability toshaped 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□ □□□□ 42. 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 theInstructions that tell the physical parts of theComputer what to do and computer system such asHow 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. □Prepared By : Juliet Hoh Page 3
  • 4. Computer Studies SPN 21 Form 1 (Work Book)2. Computer Lab Personal safety rules1. 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.Prepared By : Juliet Hoh Page 4
  • 5. Computer Studies SPN 21 Form 1 (Work Book)3. Basic principles of computers1. The block diagram of a computer is shown below. It shows the four operations in dataprocessing. 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 : ______________________________________________Prepared By : Juliet Hoh Page 5
  • 6. Computer Studies SPN 21 Form 1 (Work Book)4. Parts of computerHardware and SoftwareIn 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 mostimportant 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) ______________________________Prepared By : Juliet Hoh Page 6
  • 7. Computer Studies SPN 21 Form 1 (Work Book) 5. Computer System Electrical Connections1. 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 systemunit.2. Why is it not advisable to connect a system unit together with a few peripherals to asingle 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 * Cable4. Briefly describe the normal procedure of starting a computer system.____________________________________________________________________________________________________________________________________5. Computers sometimes need to be restarted when errors occur. This happens when acomputer ‘hangs’, that is, when it stops processing. Do you know the keys that will restartthe computer without turning off the power ? Locate these keys on the keyboard._____________________________________________________________________________________________________________________________________________________________________________________________________Prepared By : Juliet Hoh Page 7
  • 8. Computer Studies SPN 21 Form 1 (Work Book)6. Care for computer systems, storage media and simple health issuesEXERCISE 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 drivesPrepared By : Juliet Hoh Page 8
  • 9. Computer Studies SPN 21 Form 1 (Work Book)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 disk2. 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 thatcan be easily damaged by magnets. Diskette Hard disk CD-R CD-ROM Thumb driveExplain your answer.____________________________________________________________________________________________________________________________________4. Use the following media terms to answer the questions that follow.Hard disk Thumb drive Floppy disk DVD CDWhich 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 ? ______________Prepared By : Juliet Hoh Page 9
  • 10. Computer Studies SPN 21 Form 1 (Work Book)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 _______________________________________________________Prepared By : Juliet Hoh Page 10
  • 11. Computer Studies SPN 21 Form 1 (Work Book)EXERCISE 7 (Part 2)Input and OutputWhat you put into a computer (input) controls what you get out of it (output). The equipment whichyou use to put information (called data) into a computer is called input devices. The equipment weuse 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 DevicePrepared By : Juliet Hoh Page 11
  • 12. Computer Studies SPN 21 Form 1 (Work Book)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.Prepared By : Juliet Hoh Page 12
  • 13. Computer Studies SPN 21 Form 1 (Work Book)8. Input Devices (Automatic)1. Which one of the following information cannot be obtained from the UPC of a productsold in a supermarket ?(a) Weight (b) Supermarket name(c) Product type (d) Price2. The most popular input device used for playing video games is a __________.(a) mouse (b) keyboard(c) joystick (d) bar code reader3. Which input device is used to enter textual data into the computer ?(a) keyboard (b) joystick(c) mouse (d) bar code reader4. Which one of the following devices is not used to control the cursor ?(a) Scanner (b) joystick(c) mouse (d) keyboard5. Fill in the blanks with the appropriate words given in the box below.Bar codes Joystick Digital cameraScanner 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 iscalled __________.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 ______________________________________________________.Prepared By : Juliet Hoh Page 13
  • 14. Computer Studies SPN 21 Form 1 (Work Book)9. Output Devices1. A chart, graph or text printed on paper is called a ___________.(a) hardware (b) software(c) soft copy (d) hard copy2. Pixels are associated with ______________.(a) sound (b) speech(c) graphics (d) brightness3. LCDs are used in ___________.(a) portable computers (b) minicomputers(c) mainframe computer (d) supercomputers4. Which one of the following devices has the fastest printer speed ?(a) Dot matrix printer (b) ink-jet printer(c) Laser printer (d) Plotter5. Which one of the following types of monitor has a screen with very high resolution ?(a) CGA (b) SVGA(c) VGA (d) EGA6. Fill in the blanks with the appropriate words given in the box below.Dpi resolution output ppmPixels 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.Prepared By : Juliet Hoh Page 14
  • 15. Computer Studies SPN 21 Form 1 (Work Book)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 : ___________________________________________________Prepared By : Juliet Hoh Page 15
  • 16. Computer Studies SPN 21 Form 1 (Work Book)10. Storage devices1. 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 screenPrepared By : Juliet Hoh Page 16
  • 17. Computer Studies SPN 21 Form 1 (Work Book)11. Troubleshooting Computers1. 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”.____________________________________________________________________________________________________________________________________Prepared By : Juliet Hoh Page 17
  • 18. Computer Studies SPN 21 Form 1 (Work Book)12. Bits and Bytes1. Use the given words to compete the concept map on memory and storage media.Secondary storage media CPU CD-ROMTo store data and programs permanently floppy disk hard diskThumb 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 : ____________________________
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