Introduction For the A+ Certification exams, you should be able to identify the names, functions, and characteris­tics of the major components and ports of a Pc.

Practice 1.1 Fill in the blanks for the statements about analog and digital. The following terms may be used more than once.

analog digital

1. The switch in illustration A best represents a(n) __ 1. electronics system.

2. The switch in illustration B best represents a(n) __ 2. electronics system.

3. A(n) __ electronics system uses varied voltage signals. 3.

4. A(n) __ electronics system uses signals of full voltage or 4. no voltage.

Off = 0 On= 1

;1 ~& A

Off 1/3 power

iilr 6

;' cj§h

B

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Practice 1.2

Identify the following as relating to ASCII, binary, or hex. The following terms may be used more than once.

ASCII binary hex

1. Number base 16 system. ____________________________

2. Pattern of ones and zeros. ___________________________

3. IF (represents 31 in decimal).

4. Number base 2 system. __________ __________________

5. Represents computer character codes. _______________________

6. 1011 0011. _ ___________________________

Practice 1.3 Label the following units of data.

bit byte word

1011 0100 11101101 00101110 01000111

A. I B. I T'---_____--.I C __1_____ _ _ __----1

Practice 1.4 Match the computer terms to their definitions. Not all of the definitions will be used.

1. _ _ anti-static wrist strap a. To plug in or unplug a device while the PC is running.

2. __ computer b. Drive bay designed to accommodate the easy hot swap of devices such as hard disk drives, tape drives,

3. _ _ device bay CD-RW drives, and DVD drives.

4. __ electrostatic discharge (ESD) c. Collection of transistors, resistors, and other electronic

5. _ _ hot swap components reduced to an unbelievable small size.

6. __ integrated circuit (IC) d. Strap, typically worn around the wrist, that connects the technician to ground and bleeds off any 7. __ peripherals electrostatic charge.

e. Assemblage of electronic modules that interact with software to create, modify, transmit, store, and display data.

£. Optional equipment used to input or output data.

g. Release of energy (electrical current), created when an object with an electrostatic charge makes contact with a conductor.

h. A circuit board covered by a maze of conductors which provide electrical current to the computer.

10 Computer Service and Repair Study Guide Copyright by Goodheart-Willcox Co., Inc.

----------------------------------------Name

Practice 1.5 Fill in the blanks for the statements about computer numerical values. Not all of the terms will be used.

exabyte kilobyte petabyte

gigabyte megabyte terabyte

1. 1024 bytes of RAM is approximately equal to 1 ____. 1.

2. 1,099,511,627,776 bytes of RAM is approximately equal to 1 2.

3. 1,048,576 bytes of RAM is approximately equal to 1 ____. 3.

4. 1,073,741,824 bytes of RAM is approximately equal to 1 ____. 4.

5. 1,152,921,504,606,846,976 bytes of RAM is approximately 5. equal to 1 ____.

Practice 1.6 Label the major computer parts. Not all of the terms will be used.

llasic input/output central processing hard drive power supply system (BIOS) unit (CPU)

heat sink with RAM battery expansion card cooling fan

expansion card slot motherboard

D.

F.

E.

c. _____________________ H. ______________________

C

Copyright by Goodheart-Willcox Co., Inc. Chapter 1 Introduction to a Typical PC 11

Practice 1.7 Match the name of the computer component to its definition. Not all of the definitions will be used.

1. __ basic input/output system a. The brain of the computer, which performs functions (BIOS) such as carrying out program code, translating

commands into actions, and performing calculations.2. __ battery b. A volatile memory system into which programs are3. __ central processing unit (CPU)

loaded. 4. ___ complementary metal oxide

c. A board that can be easily installed in a computer tosemiconductor (CMOS) enhance or expand its capabilities.

5. __ cooling fan d. The chip that stores the BIOS setup program data.

6. __ expansion card e. A circuit board covered by a maze of conductors

7. __ expansion card slot which provides electrical current to the computer components and expansion slots.8. hard drive

f. The component that supplies voltage to the CMOS chip. 9. motherboard g. A fan that supplies a constant stream of air across the10. RAM

computer components.

h . Special firmware that permits the compatibility between the CPU and devices such as the hard drive, CD-ROM drive, and monitor.

1. Converts 120 Vac input to a much lower dc output required by the computer components.

J. Receptacle for expansion cards which allows them to ~

connect to the motherboard's circuitry.

k. A magnetic storage media consisting of a set of magnetic disks and read/write heads housed inside a hard case.

Practice 1.8 Identify the computer ports.

audio out keyboard mouse RJ-45

FireWire microphone parallel serial

headphones monitor (HD-15) RJ-ll USB

A L K I k-------~~--------_+--------~~------~

''f?

B C G H

A. _____________________ E. 1.

B. F. J. C. e. K.

H. ____________________ _ D. L.

D E F

Computer Service and Repair Study Guide Copyright by Goodheart-Willcox Co., Inc. 12

Name ____________________

Practice 1.9 Label the tools.

anti-static wrist strap flat tip screwdriver star driver

chip puller Phillips screwdriver Torx driver

A. ________ B. c. D.

E. F.

Copyright by Goodheart-Willcox Co., Inc. Chapter 1 Introduction to a Typical PC 13

Chapter 1 Review

Introduction to a Typical PC

Name ______________________________________________ Date ____________________________

Period ______________________________________________ Score ___________________________

Write your answers in the spaces provided at the end of the question. For fill-in-the-blankquestions, provide the word or words needed to complete the sentence.

1. Give three examples of computer data. ________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

2. How is data represented inside the computer? _________________________________________

___________________________________________________________________________________

3. Data represented as electrical pulses are changed to _____ patterns when stored on a floppydisk. ______________________________________________________________________________

___________________________________________________________________________________

4. What two numbers are used to represent data in a computer system or storage device? _____

___________________________________________________________________________________

5. What are the two categories of electronic components? __________________________________

6. A dimmer switch best represents which category of electronic device? ____________________

7. A simple on/off switch best represents which category of electronic device? _______________

8. What is the name of the number system used to represent digital electronics? ______________

9. What number system is composed of only one and zero? ________________________________

10. How is Morse code similar to computer technology? ___________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

11. What number system uses sixteen characters, 0–9 and A–F? _____________________________

12. The brain of a computer is called the _____, or CPU. ____________________________________

___________________________________________________________________________________

13. The power supply converts ac to _____. _______________________________________________

14. Computer data and programs are generally stored on the PC’s _____. _____________________

___________________________________________________________________________________

Chapter 1 Introduction to a Typical PC 37Permission granted to reproduce for educational use only

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15. The volatile memory system inside a PC case is referred to as _____ and is represented by thethree-letter acronym _____. __________________________________________________________

___________________________________________________________________________________

16. A permanent form of memory is called _____ and is represented by the three-letter acronym_____. _____________________________________________________________________________

17. BIOS is a form of _____ memory. _____________________________________________________

18. The BIOS supports communication between the _____ and the computer’s _____.

___________________________________________________________________________________

19. The BIOS stores information about the hardware in the _____.____________________________

20. A(n) _____ is used to retain data in the CMOS after the computer’s electrical power isswitched off. _______________________________________________________________________

21. PCI is an example of what? __________________________________________________________

22. What is the name and acronym of the test performed by BIOS when a computer is turned on?

___________________________________________________________________________________

23. A single binary digit is called _____, and a collection of eight binary digits are called a(n) _____.

___________________________________________________________________________________

24. A(n) _____ is the total amount of data (in bits or bytes) that a computer can process at one time.

___________________________________________________________________________________

25. When writing down memory usage, _____ are represented by the letter b, and _____ are rep-resented by the letter B. _____________________________________________________________

26. What is the decimal equivalent to the hexadecimal letter F? _____________________________

27. The first standardized computer symbol code is called _____ and is represented by theacronym _____. ____________________________________________________________________

___________________________________________________________________________________

28. _____ transfer sends data one bit at a time while _____ transfer sends data in many bitssimultaneously. ____________________________________________________________________

29. What devices allow computers to communicate over telephone lines? _____________________

30. Based on the number base 2, how many actual bytes are there in one kilobyte? _____________

31. What is the technical term for a “chip”? _______________________________________________

32. What is a common source of IC damage? ______________________________________________

33. How can ESD be prevented? _________________________________________________________

___________________________________________________________________________________

34. What generally produces static? ______________________________________________________

35. Why should a PC technician avoid using magnetic screwdrivers or extraction tools? ________

___________________________________________________________________________________

38 Computer Service and Repair Instructor’s ManualCopyright by Goodheart-Willcox Co., Inc.

Name ______________________________________________

Permission granted to reproduce for educational use only

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