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Introduction to Computer , types of computer,classification of computer What computer can do and cant do

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Israr Ahmed
Comwave Institute Of Science & Information Technology F8 Islamabad

Published in: Education
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Introduction to Computer , types of computer,classification of computer What computer can do and cant do

  1. 1. PRESENTATION # 01 SUBMITTED TO : SIR UBAID ULLAH SUBMITTED BY : ISRAR Ahmed israrahmed132@yahoo.com
  2. 2.  INTRODUCTION  TYPES OF COMPUTERS  CLASSIFICATION OF COMPUTERS  CHARACTERISTICS OF COMPUTERS  WHAT COMPUTERS CAN DO  WHAT COMPUTER CAN’T DO
  3. 3. INTRODUCTION A computer is a programmable machine . The two principle characteristics of a computer are :  It responds to a specific set of instructions in a well-defined manner .  It can execute a prerecorded list of instructions (program) .SS
  4. 4. TYPES OF COMPUTER
  5. 5. Classification of Computer When we study on the basis of their construction....  Size.  Performance.  Speed of execution.  Technological development.  Power of computational process. Then classified into following types.....
  6. 6. MAINFRAME COMPUTER  Very large.  Expensive computer.  Process data at very high speed.... MIPS ( million instreaction in per second ).  Control data more then 1000 users.  Process hundred different program at a time.  Major manufacture compny.  uses.
  7. 7.  First mainframe computer manufacturer by IBM ( international business machines )
  8. 8. Mini computer  Same as mainframe  Smaller in size  Less cost  Less speed and capacity  First interduced in 1960s  Major manufacturers compny  Uses
  9. 9. Miniframe Computer
  10. 10. MICRO COMPUTER  Most common type of computer ( PC )  Easily to affordable  First manufacture compny  limited processer  singer user  90% people used in this computer  uses
  11. 11. Micro computer
  12. 12. Super computer  Artificial intelegence  Most power full and fastest  More expensive ( cost )  Very big in size  Processing speed  Uses  Manufacturer companies
  13. 13. Super computer
  14. 14. CHARACTERISTICS OF COMPUTER  Word length : A digital computer operates on binary digits – 0 and 1 . The number of bitsthat a computer can process at a time in parallel is called its word length .
  15. 15. Speed :  Computers can calculate at very highspeed, for example it can execute millions of instructions per second .
  16. 16. Accuracy :  The accuracy of a computer systemis very high . Errors in hardware can occur , but error detecting and correcting techniques will prevent false result .
  17. 17. STORAGE :  Capability of storing and retrieving hugeamounts of data in a fast and efficient manner is one of the importantcharacteristic of computer .
  18. 18. Automation : Computer can perform every difficult task flawlessly and execute the programs in the correct sequence .
  19. 19.  Computer is a versatile machine . It is capable of performing almost any task , provided the task can be reduced to a series of logical steps .
  20. 20. WHAT COMPUTER CAN DO? Computer plays an important role in our daily life. Now a days computer is used to perform different tasks .
  21. 21. Complex calculations  Computer can solve any type of complex calculation and gives us right answer and can perform arithmetic and logical operations in a quick way. • = • > • < + - /x
  22. 22. STORAGE Computer can store large amount of data and information. For Example: Documents Pictures Videos etc
  23. 23. ENTERTAINMENT  Computer can also be the source of entertainment.  We can entertain ourselves by playing  Games  Watching Movies  Listening Music  etc.
  24. 24.  In offices Computers can be used for preparing letters , documents and reports.  In Hotels Computer are can be used for advance booking of rooms , preparing bills and providing enquiry services.  In Railways computer are can be used to do rail reservation, printing of tickets and preparation of reservation charts.  Doctors can use computers for diagnosing illness and treatment of diseases.
  25. 25. WHAT COMPUTER CAN NOT DO?
  26. 26. . Computer is a machine and we have made it so it cannot do such a tasks which we can do. I can’t do really
  27. 27. Productivity :  Computer haven’t yet make all our expectationas a productivity improvement tool . Sometimes it takes longer time to do things as compared to do manually .

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