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Introduction to computer

Introduction to computer. Submitted by : aashish.c ashish.m Abhijeet.g Ankit.j abhay.j . CONTENT. WHAT IS COMPUTER? WHY COMPUTER? COMPUTER COMPONENT DATA & INFORMATION

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Introduction to computer

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  1. Introduction to computer Submitted by : aashish.c ashish.m Abhijeet.g Ankit.j abhay.j SEC:A PGDM SEM I: MAISM

  2. CONTENT • WHAT IS COMPUTER? • WHY COMPUTER? • COMPUTER COMPONENT • DATA & INFORMATION • INPUT DEVICES • OUTPUT DEVICES • TYPES OF COMPUTER SEC:A PGDM SEM I: MAISM

  3. WHAT IS COMPUTER ? • A computer is an electronic machine or device executing the instruction in a program . • A computer can accept data, manipulate or process the data, produce result, and store the results. SEC:A PGDM SEM I: MAISM

  4. What is computer ? • A computer is an automatic electronic apparatus used for making calculations or controlling operations that are expressible in numerical or logical terminology. • In other words a computer is defined as a electronic device used to carry out mathematical and non- mathematical operations with the help of the programs. SEC:A PGDM SEM I: MAISM

  5. Contd………………. • A program is a sequence of instruction which operates on data to perform certain task. SEC:A PGDM SEM I: MAISM

  6. Why computer ? • Today we are living in the age of MACHINE AND TIME. When we work manually, it takes a lot of time and in order to save this time we need computers. • To save time & better performance. • To avoid errors/mistakes. • To get the output as hardcopy(print out) and soft copy in desired format. SEC:A PGDM SEM I: MAISM

  7. cont • To store huge amount of data easily & conveniently. • To establish a fast communication of data/ information. • To minimize the redundancy of data. SEC:A PGDM SEM I: MAISM

  8. Computer component Output devices Storage unit System unit Output devices Input devices SEC:A PGDM SEM I: MAISM

  9. DATA &INFORMATION • Data Raw facts, figures and symbols. Data • Information organized,meaningful,and more useful Computer +program SEC:A PGDM SEM I: MAISM Information

  10. Input devices • To get data and instructions into the computer. • Keyboard • Mouse • Micro phone(audio data) • PC camera(video data) • Scanner(image input) SEC:A PGDM SEM I: MAISM

  11. Output devices • Monitor • Printer • Speaker SEC:A PGDM SEM I: MAISM

  12. monitor • Monitor : It is a piece of electronic equipment which display images generated by computer devices. • Classification of monitor based on colour • Monochrome • Gray scale • Colour. SEC:A PGDM SEM I: MAISM

  13. Contd…………………. • Based on signals: • Digital monitor ex : score board in cricket match • Analog monitor ex: monitor based on CRT technology. SEC:A PGDM SEM I: MAISM

  14. printer • Impact printer: Impact printer use the familiar typewriter approach which cause hammer or pins to strike against a ribbon and paper to print the text, type of impact printer are • character printers • Line printer SEC:A PGDM SEM I: MAISM

  15. Contd……… • Non impact printer: These printer use non-impact technology such as ink-jet or laser technology. These printer provides better quality of output at higher speed , type of non-impact printer are • Character printer • Page printer SEC:A PGDM SEM I: MAISM

  16. Types of computer SEC:A PGDM SEM I: MAISM

  17. According to the data processing mode/logic/manufacturing principle SEC:A PGDM SEM I: MAISM

  18. . • Analog computer:- These computer are used for measuring purpose rather than counting. Analog computers deal with continuous data.They are used for measurement of a physical quantity. The output readings of these computer are generally on dials or graphs. SEC:A PGDM SEM I: MAISM

  19. Analog computer process physical data to mathematical equations. • They are mostly used for differential equations. • The accuracy of analog computer is very high. • Example:- In petrol pump, Automobile speedometers. SEC:A PGDM SEM I: MAISM

  20. Digital computers:- • Digital computers operates on discrete data values. These values are countable instead of measurable • Digital computer performs each and every operations in the form of binary words(string of zeros and ones). • These are high speed programmable electronic devices that perform arithmetical, logical operations and store the results. SEC:A PGDM SEM I: MAISM

  21. Cont……………. • Digital computer are most widely used computer in the world. • Example: personal computers(pc) score board in the cricket match. SEC:A PGDM SEM I: MAISM

  22. TYPES OF DIGITAL COMPUTER: • General purpose digital computers: ex: Accounting banking, payroll. • Special purpose digital computers: ex: American atomic submarines. SEC:A PGDM SEM I: MAISM

  23. HYBRID COMPUTERS: • Digital computer are made by combining the best features of digital computers as well as analog computer. • The digital computer gives better accuracy and analog computer gives better speed, therefore the hybrid computer includes both features, speed and accuracy. SEC:A PGDM SEM I: MAISM

  24. Contd…………. • These computers are extensively used for those applications in which the input is received in analog form from various resources and converted in to digital form for further processing. • Example: In the ICU, of a hospital SEC:A PGDM SEM I: MAISM

  25. types of computer SEC:A PGDM SEM I: MAISM

  26. ACCORDING TO SIZE\FUNCTION\COST SEC:A PGDM SEM I: MAISM

  27. MICRO COMPUTER • A micro computer is the cheapest and the smallest of all the computers. • A micro computer has a microprocessor chip as its CPU, these microprocessor are programmed at the time of manufacturing and are connected to the peripheral devices. SEC:A PGDM SEM I: MAISM

  28. CONTD…………….. • A microprocessor is a digital device which has millions of logical circuit, these circuit are made up of transistors these transistors are mounted on very thin semiconductor silicon chips SEC:A PGDM SEM I: MAISM

  29. MINI COMPUTER • Mini computer are general purpose computers whose storage capacity is more than micro computer. • In size these are larger than microcomputer but smaller than mainframe computer. • Mini computer are generally used where large number of people have to work on different terminals having same job, such as statistical analysis, telephone or electricity billing. • Some example of mini computers are HONEYWELL,PDPII/70. SEC:A PGDM SEM I: MAISM

  30. MAINFRAME COMPUTER • Mainframe computer are also called as mini computer. These are very large computers in size. • The memory size of these computer is 16GB or even more. • The cost of mainframe computers varies from 10lahks to crores. • Some organizations where the mainframe computer are installed are IITs, BHEL etc. SEC:A PGDM SEM I: MAISM

  31. Super computer • Super computer also known as maxi computer. • These computer are the most sophisticated machines used for special purpose applications such as weather forecasting, missile, atomic experiments. • The speed of super computer is measured in billions instructions per seconds(BIPS). • Super computer contains a number of CPUs which operates in parallel to make it faster. SEC:A PGDM SEM I: MAISM

  32. THANK YOU SEC:A PGDM SEM I: MAISM

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