Note on Fundamental Knowledge of Computer

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The computer is an electronic machine which generates information by processing raw data according to the prescribed instructions. It accepts data, process it and give required output.

The first fully electronic computers, introduced in 1940s, were huge machines that required teams of people to operate. Compared to those early machines, today's computers are not only thousand times faster, they can fit on your desk, lap and even pocket. You must appreciate the impact of the computer in our day-to-day life. The computer has been useful in the reservation of tickets in Airlines and Railways, payment of telephone and electricity bills, deposits etc.

Information Processing Cycle (IPC)

A computer converts data into information by performing various actions. The computer accepts data from the input devices and processes them according to the given instructions. After the processing task, the computer produces the meaningful output and displays them through output devices. Such process performed by the computer is known as IPC cycle.

The set of steps that the computer follows to receive data, process the data according to the instructions, display the result and store the result is known as Information Processing Cycle.The information processing cycle has four steps. They are as follows:

  • Input: The computer gets data from the user through input devices such as keyboard, mouse etc. This is the very first step of the computer.
  • Process: This is the second step of the computer cycle. In this step the computer's processing device process the input data based on instructions. CPU is the main processing unit of the computer.
  • Output: This is the third step of the computer cycle. The computer gives meaningful information after completion of processing task which is displayed on the output devices. Monitor, printer, plotter etc are some of the common examples of output devices.
  • Storage: This is the fourth step of computer cycle. The computer permanently stores the result of processing on Hard disks or some other kinds of storage medium.

Advantage and disadvantage of computer

The computer has been the most useful machine in today's world. It is necessary for the user to know about basic layout and function of the computer. A computer can perform the task very quickly as well as accurately. But, it is a man-made thing, which do the things that the humans program them to do. The computer does not have common sense. It just does things what we tell it to do.

Uses of computer

Computer users should know about uses and application of computer. We should know which software is to be used to solve different kinds of problems as well as to control the operations of the computer hardware.

Ways to acquire computer software

The second most important component of the computer system is software. There are different kinds of computer software. We use the different software according to our requirements. We should buy some software like Microsoft Word whereas we can utilize some software freely. Such software are known as open source software, example: open office.

Impact of computer

Today the computer has changed our society. The computer has affected all aspects of people's lives. It is useful for us to know how the computer has changed the style of our daily activities. In near future, we shall totally depend on the computer.

Some useful terms

Data: Data are the raw facts collected together for reference or analysis.

Information: The meaningful result obtained after processing is known as information.

Program: The set of instructions which are used in the programming language is known as program.

Hardware: The physical parts of the computer that can be touched, seen and felt are called hardware.

Software: The collection of computer programs and related data that provide the instructions telling a computer what to do is called software.

  • The computer is an electronic machine which generates information by processing raw data according to the prescribed instructions. It accepts data, process it and give required output.
  • The set of steps that the computer follow to receive data, process the data according to the instructions, display the result and store the result is known as Information Processing Cycle.
  • The information processing cycle has four steps. They are input, process, output and storage.
  • The computer data from the user through input devices such as keyboard, mouse etc.
  • Monitor, printer, plotter etc are some of the common examples of output devices.
  • The meaningful result obtained after processing is known as information.
  • The collection of computer programs and related data that provide the instructions telling a computer what to do is called software.
  •  The physical parts of the computer that can be touched, seen and felt are called hardware.
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Very Short Questions

Computer is an electronic data processing device capable of taking an input data, processing them and displaying the processed result at a very high speed under the control of set of instruction. The features of computer are:

  • Speed
  • Accuracy
  • Versatility
  • Diligence

Since, the computer accepts raw data as input and converts into information by means of data processing, it is called information processing machine (IPM).

Data is defined as the raw facts or symbols which are collected from various sources and need to be processed.Information is defined as the desired or meaning full result obtained after processing the data.

The information processing cycle has four steps. They are as follows:

  • Input: The computer gets data from the user through input devices such as keyboard, mouse etc. This is the very first step of the computer.
  • Process: This is the second step of the computer cycle. In this step the computer's processing device process the input data based on instructions. CPU is the main processing unit of the computer.
  • Output: This is the third step of the computer cycle. The computer gives meaningful information after completion of processing task which is displayed on the output devices. Monitor, printer, plotter etc are some of the common examples of output devices.
  • Storage: This is the fourth step of computer cycle. The computer permanently stores the result of processing on Hard disks or some other kinds of storage medium.

The collection of computer programs and related data that provide the instructions telling a computer what to do is called software.

computer is an electronic device that accept data ,processing data, storing data and release it an output.

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  • What is computer?

    Electronic device that can perform IPO cycle.
    Manipulation of data.
    Combintion of different parts.
    Collection of instructions.
  •  The computer permanently stores the result of processing on ____________.

    ROM
    Harddisk
    RAM
    CPU
  •  Computer gives meaningful information after completion of processing task which is displayed through the _______________.

    control devices
    memory devices
    output devices
    input devices
  • The computer's processing device process the input data based on ___________.

    charts
    instructions
    raw facts
    code
  • _______ is the raw facts collected together for reference or analysis.

    Software


    Information


    Data 


    Program


  • The meaningful result obtained after processing is known as:

    Program
    None of the answers are correct 
    Information 
    Data
  •  The set of instructions which are used for programming language is known as __________.

    Instructions 
    Data
    Program
    Hardware
  • Define Hardware:

     The meaningful result obtained after processing.
     The set of instructions which are used for programming language.
     The physical parts of computer that can be touched , seen and felt.

    The collection of computer programs and related data that provide the instructions telling a computer what to do.
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nabin

what is computer


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