Maa Shaila Foundation Regd. by Govt. of India, Ministry of Corporate Affairs(New Delhi) Housing Board Colony, Barari, Bhagalpur 812003 Contact 9199033504 Maa Shaila Foundation (a Non Profitable Organization) has opening for the following positions on contract basis for Bihar(All District except Bhagalpur & Vaishali). The yearly contract could be renewed subject to satisfactory performance. Position: District Co-Ordinator cum Study Centre In-charge No. of Vacancies: 36 Job Location: Home District(Bihar) Last Date/Closing Date: 24.11.2025 Application fee: Rs.100 Salary: Basic + Incentive(as per performance) Eligibility Qualification: Any Graduate Age Limit: 21-40 Years Residential: Should Own House in that District Space Requirement for office: 200 Square Feet Experience in Education Field is preferable Job Nature: Organize NGO Activity and expand office in all block in your home district. Manage Study Centre cum office in your home district and take adm...
Computer is a very useful machine. It is used almost everywhere, such as in schools, homes, shops, offices, banks, hospitals, Defence and space research center. It has become an important part of our life.
Computer VS Man
Storage
A computer stores a large amount of information and never forgets it.
A man may forget the information stored in his mind.
Time
A computer works very fast and can do many jobs at the same time.
A man needs more time to do any work as compared to a computer.
Accuracy
A computer does not make any mistake.
A man can make mistakes.
Work Process
A computer does not get tired and can work for long hours.
A man needs rest after working for some time.
Decision
A computer cannot take its own decisions.
A man can take his own decisions.
Orders
A computer works on a man's orders.
A man does not need any order to work.
Feelings
A computer does not have any feelings. For example, If you hit a monitor, it does not react.
A man has feelings. For example, If you get hurt you feel it.
Uses of Computer in Different Field
You must have seen computers at many places. They are used in almost all fields of life.
Home
Searching information on any topic.
Playing games.
In doing homework.
Schools
Making time table, report cards and library records.
Doing practical work in lab. Helps to draw and colour.
Keeping records of items.
Typing and Printing bills.
Sending and receiving messages in offices.
Keeping the details of bank accounts.
Taking out money from ATMs.
Hospitals
Preparing medical reports and X-rays, etc.
Helping doctors to know more about diseases and their causes.
Designing
Designing and printing books newspapers, magazines, etc.
Making cartoons and animated movies.
Booking tickets.
Keeping records of all passengers.
Giving information about arrival and departure timings.
Finding information about Space.
Sending rockets into Space.
Helping the military to make security weapons.
Learning how to drive a car or fly an aeroplane.
Learning different languages, cooking, and much more.
Types of Computer
This is a Desktop Computer.
Desktop computers are big in size.
They are kept on a desk or a table.
This is a Laptop.
It is small in size. It can be kept on our lap.
A laptop can be carried around easily.
A Tablet is larger than a mobile phone.
It has a touch screen on which we can write using a special purpose pen.
A smartphone is a mobile phone that lets you make calls, send messages, and store phone numbers.
It can also be used to share images and videos, read emails, and search information on the Internet.
PARTS OF A COMPUTER
A human body is made up of different parts. Each part has a special work to do. In the same way, a computer is made up of different parts. All these parts together make a computer work.
A computer is a machine that has four main parts: Monitor, Keyboard, CPU, and Mouse.
A monitor looks like a TV screen.
It shows the text typed in and the work done by us. It also displays the results.
Keyboard
A keyboard is used for typing letters, words, numbers and special symbols.
A standard keyboard has 104 keys.
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CPU stands for Central Processing Unit.
CPU is called the brain of a computer.
It helps a computer to think and do all its work.
It also a computer to remember things.
All the other parts of a computer are attached to the CPU by wires.
Mouse
It is used to point, move, and select any item on the computer screen or monitor.
A mouse also helps us to draw pictures and play games.
Types of Mouse
A mouse can be of different types:
Scroll Mouse
A scroll mouse has a scroll wheel in the middle of the left and the right button. We can move a page up and down by moving the scroll wheel.
A scroll mouse is of two types:
Ball Mouse: A ball mouse has a ball under it. This ball helps to move the mouse pointer on the screen.
An optical mouse uses light instead of a ball for movement of the mouse pointer.
More Parts of a Computer
Apart from the four main parts, there are some other parts of a computer, which can be attached to it for different to it for different functions.
A printer is used to print the text or pictures on paper.
It can print both in black and white or colour.
The printed copy on a paper is called the hard copy.
Microphone
A microphone is used to record our voice and different sounds into a computer. It also helps us to talk us to talk to our friends through Internet.
Speakers
Speakers allow us to listen to music and hear sound effects stored in a computer.
Headphones
Headphones are used to listen music as well as recorded sounds without disturbing others.
Headphones are also known as earbuds or earphones.
A CD is round in shape. It is used to store a lot of information.
It is a shiny disk that runs on a CD drive.
The CD drive is fixed in the CPU.
Hard disk is like a box which is fixed inside the CPU.
It is used to store computer data.
Pen Drive
It is a small rectangular device, that is used for transfering data from one computer to another.
It is also called Flash drive, Thumb drive, or Jump drive.
WORKING OF A COMPUTER
A computer cannot work on its own. We need to enter letters, numbers, pictures and instructions into the computer to make it work. These are called data. Different parts of a computer do different tasks. A computer works in three basic steps:
INPUT-PROCESS-OUTPUT
Let us understand these steps by taking an example of our body. When a teacher asks us a question, we hear with our ears and see with our eyes. The ears and eyes are the input units. Our brain stores everything that a teacher says. Then, it thinks of an answer and orders us to speak. In this way, the brain works like a processing unit. When we answer with our mouth, it works like an output unit.
Input
The data and instruction that we enter into a computer are called output. We input data using a keyboard and a mouse.
Process
Working on the data is called processing. The CPU works on the data and does all the thinking and calculations.
Output
Output means the final result. When the CPU finishes processing the data, the output is displayed on the monitor. Monitor and printer are the most common output devices.
Let us understand the working of a computer with an example.
The data and instructions together are the input. Here 2 and 5 are the data and '+' is the instruction.
Input: 2,5,+
Now the CPU will work on the data according to the instruction, i.e., it will add the numbers 2 and 5.
Process: 2+5
7 is the correct result or output of the sum: 2+5=7
Output: 7
OPERATING A COMPUTER
Operating system is a computer software which has been made to make adjustment among varous units as well as to control them. It is a link between computer and its user.
Windows 10 is the most popular program that makes the computer work.
- The first screen that appears on starting a computer is known as the Desktop.
- The Desktop holds many small pictures, known as icons.
- The thin bar at the bottom of the desktop is called Taskbar.
- When you peep through your bedroom window, you can see different views.
In the same way, you can open and view many programs in Windows, like paint, movies music and games.
Starting a Program
- To open the WordPad program, follow the steps given below:
- Click on the Start > Windows Accessories > WordPad
- The wordPad window will open.
Title bar: The top-most blue bar of the WordPad window is known as the Title bar.
Re-sizing a window
You can change the size of a window.
- Look at the Control button at the top right corner of the Title bar.
- Click on the middle button(Restore Down).
- The WordPad window will become smaller in size.
- Again click on the middle button to get back to its normal size.
Moving a Window
- Click on the middle button (Restore Down). The window will become smaller in size.
- Click and hold the left mouse button on the Title bar.
- Drag the WordPad window to the right side.
- Now move the pointer over the desktop area and click once.
- The WordPad window becomes inactive. That means you can only read the items in the WordPad window.
- Now click on the WordPad working area. The WordPad window becomes active.
How to shut down a comptuer?
- After your work is finished, you should always shut down the computer.
- Now wait for some time till the computer turns off automatically.
- Then switch off the monitor button.
- Switch off the UPS and the main power supply button.
Computer Care Tip: Switching off the main power supply button directly without shutting down the CPU can harm the computer.
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