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Computer Basics
Objective

Upon completion of this lecture you will understand:

• Need of Computer Literacy
• What is a Computer?
• Its a...
Need For Computer Literacy
    In most places of business, a computer is standard.

• Bank - to look up account informatio...
Application of Computer
        System
Today computer is used almost in every field.
For example. It is used in
• Banks
• ...
What is Computer?

A computer is programmable electronic device which inputs
data, processes it, giving information accord...
Components of Computer
          System
What is the difference between the computer and
computer system?

Computer refers ...
Computer Hardware
Computer Hardware

We can classify the computer hardware as:
•   Input Devices – those devices which are used for entering...
CPU
          CPU

I                       O
    CU        ALU
N                       U
P                       T
U      ...
Continued….
Have you seen CPU? If so how it looks like?
Ans: It looks like BOX
No,
You are talking about cabinet, which in...
Computer Software
Types of Computer Software
Computer software can be categorized into                             following   two
categorie...
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Lecture 1

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basics of computers

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Transcript of "Lecture 1"

  1. 1. Computer Basics
  2. 2. Objective Upon completion of this lecture you will understand: • Need of Computer Literacy • What is a Computer? • Its advantages over the manual system. • Components of a computer system.
  3. 3. Need For Computer Literacy In most places of business, a computer is standard. • Bank - to look up account information. • Library - card catalog — to use a computerized database. • Doctors' offices - to store patient information. • It will help in getting a job and it will help you advance in your career. • Computer literacy does not mean you need to know how to use every single piece of software. • It does not mean you need to know how to write programs or network of computers. • You just need to know some basics — how to save and open a file, how to use a word processing program, and how to send and receive email. • Having some sort of level of comfort around computers rather than a look of fear.
  4. 4. Application of Computer System Today computer is used almost in every field. For example. It is used in • Banks • Railways • Hospitals • Airports • Schools/Colleges and many more……..
  5. 5. What is Computer? A computer is programmable electronic device which inputs data, processes it, giving information according to the instructions provided. Computer System Data Information PROCESSING Example: Data is marks of 60 students. Process to find highest scorer. Information is the name of topper.
  6. 6. Components of Computer System What is the difference between the computer and computer system? Computer refers to the actual physical electronic device. Whereas the computer system includes following: • Hardware – any physical component which we can touch/see. • Software – data contained in the hardware, similar to songs in audio cassette . • Live ware (user) – the computer operator
  7. 7. Computer Hardware
  8. 8. Computer Hardware We can classify the computer hardware as: • Input Devices – those devices which are used for entering data to the computer. Example: Keyboard, Mouse, Scanner, Web camera etc. • Output Devices – those devices on which we obtain information out from the computer. Example: Monitor, Printer. • Central Processing Unit – central unit which does all the processing, accepts data from input device and send processed data to the output device.
  9. 9. CPU CPU I O CU ALU N U P T U P T Memory (RAM) U T Secondary Storage
  10. 10. Continued…. Have you seen CPU? If so how it looks like? Ans: It looks like BOX No, You are talking about cabinet, which includes following:  Processor  RAM/ROM  Floppy Disk Drive  Hard Disk Drive  CD Drive  Power Supply Unit  Mother Board  Data Buses  Ports
  11. 11. Computer Software
  12. 12. Types of Computer Software Computer software can be categorized into following two categories: 1. System Software: includes those software that help in better utilization hardware resources. Example Operating System, Compiler, Disk Drivers etc. 2. Application Software: includes those software that helps in performing a particular task such as creating a document, preparing a presentation. These are general purpose software's. Example: Ms-Word, Excel, Power Point, etc. 3. Utility Software: includes those software that generally comes along with operating system used to perform basic activities. Example: Disk Format Utility, Disk Defragmenter Utility, etc. 4. Customized Software : includes software which are specially designed for a particular group of users. Example: Software for a bank, hospital, business organization, etc.
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