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DCE1243 - Introduction to PC Troubleshooting The objective  is to introduce the main concepts associated with the   assemb...
Course Work Break Downs <ul><li>Assignment 15% </li></ul><ul><li>Quizzes   5% </li></ul><ul><li>Lab Test 15% </li></ul><ul...
Areas that will be covered <ul><li>Introduction to computer </li></ul><ul><li>An overview of computer </li></ul><ul><li>As...
Introduction to computer
History of Computer <ul><li>A computer is a complex piece of machinery made up of many parts, each of which can be conside...
History of Computer <ul><li>In 1642, the French mathematician and philosopher Blaise Pascal invented a calculating device ...
History of Computer <ul><li>In 1823 Charles Babbage a mathematics professor at Cambridge University introduced the  Differ...
History of Computer <ul><li>Babbage later turned his attention to the Analytical Engine, a general-purpose programmable co...
History of Computer 1801 the Frenchman Joseph Marie Jacquard   Invented – (remember the &quot;hanging chad&quot; from the ...
History of Computer Generation Year Descriptions 1 st   1940 – 1956 Vacuum Tubes – for circuitry and magnetic drums for me...
Communication <ul><li>Humans communicate primarily through  work,   spoken and written .  Messages were either verbal or w...
Electronic Communication Computer uses binary notation to communicate Binary notation use 2 bit 0 and 1(  0  represent no ...
Communications: Moving Data between Computers <ul><li>A fifth operation: communications </li></ul><ul><ul><li>Moving data ...
Communications Devices Modem Network Interface Card – NIC
Binary Math Term Memory Unit Value Bit  Smallest unit of information, shorthand term for binary digit  Nibble  4 bits (Hal...
ASCII Code The standard code for  handling text characters  on most  modern computers is called  ASCII  (American Standard...
ASCII Code
EBCDIC Extended Binary Coded Decimal Interchange Code  ( EBCDIC ) is an 8-bit character encoding   Used on IBM mainframe o...
Understanding the Computer <ul><li>Computer – A machine that performs the four basic    operations:  </li></ul><ul><ul><li...
Understanding the Computer <ul><li>Computer system – A collection of related components that are designed to work together...
Understanding the Computer <ul><li>Program – A list of instructions that tell the computer how to perform the four basic o...
Understanding the Computer <ul><li>Software – All the programs that give the computer its instructions </li></ul><ul><li>T...
Input: Getting Data into the Computer <ul><li>Data – Unorganized raw materials made up of words, numbers, images, or sound...
Input Devices Keyboard Mouse  –  pointing device Microphone – speech-recognition Digital Cameras
Processing: Transforming Data into Information <ul><li>The second operation: processing </li></ul><ul><ul><li>Computers tr...
Processing Devices Motherboard Central Processing Unit – CPU Random Access Memory– RAM Expansion Card
Output: Displaying Information <ul><li>The third operation: output </li></ul><ul><ul><li>The computer shows the results of...
Output Devices Monitor Printer Speakers
Storage: Holding Programs and Data  for Future Use <ul><li>The fourth operation: storage </li></ul><ul><ul><li>The compute...
Storage Devices Hard Drive Floppy Disk Drive Zip Drive CD/DVD Drive Jaz Drive Tape Drive Micro Drive
The Information Processing Cycle <ul><li>Input – You enter text in a word processing program </li></ul><ul><ul><li>You run...
Types of Computers:  Computers for Individuals Desktop – PC, iMac Notebook – Laptop Workstation Personal Digital Assistant...
Types of Computers:  Computers for Organizations <ul><li>Servers are not designed for individuals. They make programs avai...
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PCT Slide1

  1. 1. DCE1243 - Introduction to PC Troubleshooting The objective is to introduce the main concepts associated with the assembling , installation , troubleshooting , and preventive maintenance of modern personal computer
  2. 2. Course Work Break Downs <ul><li>Assignment 15% </li></ul><ul><li>Quizzes 5% </li></ul><ul><li>Lab Test 15% </li></ul><ul><li>Test 15% </li></ul><ul><li>Final Exam 50% </li></ul><ul><li>Total 100% </li></ul>
  3. 3. Areas that will be covered <ul><li>Introduction to computer </li></ul><ul><li>An overview of computer </li></ul><ul><li>Assembling your computer </li></ul><ul><li>Install Operating System </li></ul><ul><li>Troubleshooting PC hardware and software </li></ul><ul><li>Preventive maintenance and safety precaution </li></ul>
  4. 4. Introduction to computer
  5. 5. History of Computer <ul><li>A computer is a complex piece of machinery made up of many parts, each of which can be considered a separate invention </li></ul>A very old abacus Modern abacus Ancient History Computer started 2000 years ago, in Babylonia, at the birth of the abacus An early aid of mathematical computations  memory of the human performing the calculation
  6. 6. History of Computer <ul><li>In 1642, the French mathematician and philosopher Blaise Pascal invented a calculating device that would come to be called the “Adding Machine”. </li></ul><ul><li>The basic principle of his calculator is still used today in water meters and modern-day odometers. </li></ul><ul><li>It couldn't sell many because of their exorbitant cost and because they really weren't that accurate. </li></ul>Pascal's Pascaline A Pascaline opened up so you can observe the gears and cylinders which rotated to display the numerical result
  7. 7. History of Computer <ul><li>In 1823 Charles Babbage a mathematics professor at Cambridge University introduced the Different Engine , the largest and most sophisticated mechanical calculator of his time. </li></ul><ul><li>The construction of this engine proved exceedingly difficult and the project failed, but it did improve the precision of Britain’s machine-tool industry. </li></ul>
  8. 8. History of Computer <ul><li>Babbage later turned his attention to the Analytical Engine, a general-purpose programmable computing machine. </li></ul><ul><li>Many people consider this to be the first true computer system even though it only ever existed on paper. The Analytical Machine had all the same basic parts that modern computer systems have. </li></ul>Different Engine Analytical Engine
  9. 9. History of Computer 1801 the Frenchman Joseph Marie Jacquard Invented – (remember the &quot;hanging chad&quot; from the Florida presidential ballots of the year 2000)
  10. 10. History of Computer Generation Year Descriptions 1 st 1940 – 1956 Vacuum Tubes – for circuitry and magnetic drums for memory  machine language to perform operations 2 nd 1956 – 1963 Transistor – replaced vacuum tubes, it is a device composed of semiconductor material that amplifies a signal or opens or closes a circuit 3 rd 1964 – 1971 Integrated Circuits – with transistors, resistors, and capacitors were etched onto a piece of silicon, called semiconductors, increased the speed and efficiency of computers 4 th 1971 – Present Microprocessors – widely used and most the wanted chips 5 th Present & Beyond Artificial Intelligence – making computer to behave like humans
  11. 11. Communication <ul><li>Humans communicate primarily through work, spoken and written . Messages were either verbal or written in form </li></ul><ul><li>Communication have one thing in common, require some type of code to convert human language to a form of information that can be packaged and send to remote system </li></ul>
  12. 12. Electronic Communication Computer uses binary notation to communicate Binary notation use 2 bit 0 and 1( 0 represent no signal off , 1 represent a signal on )
  13. 13. Communications: Moving Data between Computers <ul><li>A fifth operation: communications </li></ul><ul><ul><li>Moving data within the computer or between computers </li></ul></ul><ul><ul><ul><li>Communications devices – Enable computers to connect to a computer network </li></ul></ul></ul><ul><ul><ul><li>Network – Two or more computer systems that are connected </li></ul></ul></ul><ul><ul><ul><li>Modem – A device that enables the computer to access other computers </li></ul></ul></ul>
  14. 14. Communications Devices Modem Network Interface Card – NIC
  15. 15. Binary Math Term Memory Unit Value Bit Smallest unit of information, shorthand term for binary digit Nibble 4 bits (Half of a byte) Byte 8 bits (Equal to one character) Word 16 bits on most personal computers (longer words possible on larger computers) Kilobyte (KB) 1024 bytes Megabyte (MB) 1,048,576 bytes (Approximately one million bytes or 1024 KB) Gigabyte (GB) 1,073,741,824 bytes (Approximately one billion bytes or 1024 MB)
  16. 16. ASCII Code The standard code for handling text characters on most modern computers is called ASCII (American Standard Code for Information Interchange). The basic  ASCII standard consists of 128 codes representing the English alphabet, punctuation, and certain control characters Most systems today recognize 256 codes: the original 128, plus an additional 128 codes called the extended character set
  17. 17. ASCII Code
  18. 18. EBCDIC Extended Binary Coded Decimal Interchange Code ( EBCDIC ) is an 8-bit character encoding Used on IBM mainframe operating system such as z/OS,OS/390,VM and VSE as well as IBM midrange computer operating systems such as OS/400 and i5/OS
  19. 19. Understanding the Computer <ul><li>Computer – A machine that performs the four basic operations: </li></ul><ul><ul><li>Input </li></ul></ul><ul><ul><li>Processing </li></ul></ul><ul><ul><li>Output </li></ul></ul><ul><ul><li>Storage </li></ul></ul>
  20. 20. Understanding the Computer <ul><li>Computer system – A collection of related components that are designed to work together </li></ul><ul><li>A system includes: </li></ul><ul><ul><li>Hardware </li></ul></ul><ul><ul><li>Software </li></ul></ul>Hardware Software
  21. 21. Understanding the Computer <ul><li>Program – A list of instructions that tell the computer how to perform the four basic operations to accomplish a task </li></ul>
  22. 22. Understanding the Computer <ul><li>Software – All the programs that give the computer its instructions </li></ul><ul><li>Two categories of software: </li></ul><ul><ul><li>System software </li></ul></ul><ul><ul><li>Application software </li></ul></ul>System software Application software
  23. 23. Input: Getting Data into the Computer <ul><li>Data – Unorganized raw materials made up of words, numbers, images, or sounds </li></ul><ul><li>The first operation: input </li></ul><ul><ul><li>Input devices enable the user to enter data into the computer </li></ul></ul><ul><ul><li>The computer accepts data </li></ul></ul>
  24. 24. Input Devices Keyboard Mouse – pointing device Microphone – speech-recognition Digital Cameras
  25. 25. Processing: Transforming Data into Information <ul><li>The second operation: processing </li></ul><ul><ul><li>Computers transform data into information </li></ul></ul><ul><ul><li>Processing circuitry : </li></ul></ul><ul><ul><ul><li>Central processing unit (CPU) </li></ul></ul></ul><ul><ul><ul><li>Random access memory (RAM) </li></ul></ul></ul>Arithmetic Logic DATA IN INFORMATION OUT
  26. 26. Processing Devices Motherboard Central Processing Unit – CPU Random Access Memory– RAM Expansion Card
  27. 27. Output: Displaying Information <ul><li>The third operation: output </li></ul><ul><ul><li>The computer shows the results of the processing operation in a way people can understand </li></ul></ul><ul><ul><li>Output devices show the results of processing operations </li></ul></ul>
  28. 28. Output Devices Monitor Printer Speakers
  29. 29. Storage: Holding Programs and Data for Future Use <ul><li>The fourth operation: storage </li></ul><ul><ul><li>The computer saves the data or output so that it can be used again later </li></ul></ul><ul><ul><li>Storage devices hold all programs and data that the computer uses </li></ul></ul>
  30. 30. Storage Devices Hard Drive Floppy Disk Drive Zip Drive CD/DVD Drive Jaz Drive Tape Drive Micro Drive
  31. 31. The Information Processing Cycle <ul><li>Input – You enter text in a word processing program </li></ul><ul><ul><li>You run the program’s spell checker program </li></ul></ul><ul><li>Processing – The computer checks and compares all words entered with a list of correctly spelled words </li></ul><ul><li>Output – The computer provides a list of apparent misspellings </li></ul><ul><ul><li>You correct the spelling in your document </li></ul></ul><ul><li>Storage – You save the revised document to a disk </li></ul>Input Processing Output Storage
  32. 32. Types of Computers: Computers for Individuals Desktop – PC, iMac Notebook – Laptop Workstation Personal Digital Assistant Internet Appliance All-in-One
  33. 33. Types of Computers: Computers for Organizations <ul><li>Servers are not designed for individuals. They make programs available for network users </li></ul><ul><li>Minicomputers handle the computing for small corporations </li></ul><ul><li>Mainframes handle gigantic processing jobs for large corporations or agencies </li></ul><ul><li>Supercomputers are ultra-fast and handle huge amounts of scientific data </li></ul>

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