2nd Class

Applied Mathematics   In this chapter, we will apply our mathematical knowledge to solve various problem. Some of these problems/ along with their solutions are given below.  

•          Example:

What is the time in the clock?         (a) 6 : 45 more...

Getting Started With Computer   Introduction Computers are now available in almost every sector. The popularity of a computer is increased due to its fastest speed and error free output. It is an electronic machine that helps us to make our work easier and faster by assisting us in many ways. A computer user should also be familiar with process for starting and shutting down the computer properly. In this chapter we will study that, how a computer can be started for its working and how a person can utilize the resources provided with the hardware and software of a computer.   more...

Introduction to Windows 10   Introduction In the Window environment, all the other programs are managed by operating system is called Windows. In order to start and work, every computer needs an operating system. For the proper working of the computer, an user can understand about the feature of the operating system that is installed in the computer.   There are many operating systems in the market such as Mac OS, LINUX and UNIX but Windows 10 is the latest popular operating system that controls the working of the computer. more...

Computer Processing and Processing Devices   Introduction A Computer processing device is the part of the computer that receives input, processes the input and gives output. A computer can add large numbers and make other complex calculations and give you the result in just a few seconds.   The body of the computer is the hardware such as CPU, VDU, etc. These are the mechanical and electronic parts which can be seen and touched. A computer executes commands and instructions.   Almost all the more...

Keyboard and Mouse Usage   Introduction We know that keyboard and mouse of a computer is an input device. Keys on the keyboard has unique function. Some keys are used for typing letters and some are for numeric typing. The function keys on the keyboard are used for performing the specific task, suet as, the uses of F1 keys in most of the application is to open the help window.   The mouse sends information to the computer. A typical mouse had two buttons. At the top of the device you will find a left and right button which allows for "click". more...

  What is Data and Information?   Introduction Data is unorganized facts that need to be processed.     Data in computing is the group of numbers, letters, punctuations, etc. When data is given to the computer, the computer analyzes for types of operation to be done for the given data. After performing the required operation by the processing part of computer, the information is displayed.   The Instruction and data are permanently stored in secondary storage more...

Usage of Computers in our World   Introduction Different types of computers are used in every field of life. The PCs (Personal Computers) or the Home Computer is used at home. Laptop computer also known as the Notebook computer is used by the touring officials. In your school's computer lab, you can find a group of computers connected together, which is called LAN (Local Area Network). Some important companies manufacturing computers are Apple Computers and IBM. IBM PC is very popular. The computer has become such an important part of our lives that we can find it almost everywhere. Some of the important applications of computers are as follows:   Using computer in Railways and Airlines         Computes are widely used in railways and airlines.    In more...

Paint Brush   Introduction Drawing and painting are wonderful activity for kids. Drawing with the help of pencil, sketch pen, wax pencil etc are very tedious and time consuming job. Most of the Windows operating system comes with the application Paint or Paint Brush. Paint or Paint Brush application is a part of the accessories and can be open by clicking in the start button of the task bar. This chapter includes how to use Paint for drawing pictures.   How to open a Paint Brush? Do the following steps to open MS-Paint application:

• Click the start button in the more...

Introduction to Wordpad   Introduction Microsoft wordpad is a basic word processor that comes with windows. Wordpad a program used to process format and store documents like letters, memo, reports curriculum vitae and many more. It is also capable of producing a print out of the end results. The Wordpad file is saved with extension .rtf. But it is more advanced than Microsoft notepad.   Steps to open wordpad in windows 10:  

• Click on the windows button in the lower left hand corner of the Desktop.
• Click All programs, then Accessories, then click the Wordpad

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Definitions in Short   Introduction A computer is made of different types of parts. The name of these parts are different and naming of these parts are related with their functions. In this chapter, we will learn the definition of some difficult computer hardware and software related words that; used while we study about the computer.   Abacus An Abacus is an earliest calculating device. This device is also known as the first calculating device in the human history It is made up of beads sliding on wires. more...