Different versions of windows

The different versions of Windows are discussed below: 
WINDOWS 1.0 
Microsoft released the first version of Windows wayback in 1985. It marked a major breakthrough as it allowed users to switch from character based (CUI)/non-graphical MS-DOS to the GUI based operating system. The product  incorporated a set of desktop applications, including the MS-DOS file management  program and value additions such as a calendar, card file, notepad, calculator, clock andtelecommunications programs. It allowed users to work with multiple applications at the same time (multitasking). 
WINDOWS 3.0 
Microsoft released this version of Windows in 1990.Some of its main features were: 
•  32 bit operating system with support for advanced graphics 

Features of windows

FEATURES OF WINDOWS 
Microsoft Windowsis a series of software operating systems and graphical user  interfaces developed by Microsoft. Some of its important features are listed below:
1. Faster Operating System:Windows include tools that increase the speed of the computer. Windows includes a set of programs designed to optimize the efficiency of computer, especially when used together.
2. Improved Reliability:Windows improves computer reliability by introducing new wizards, utilities and resources that lend a hand in helping your system operate  effortlessly. 

Intorduction to DOS

INTRODUCTION TO DOS 
Disk Operating System (specifically) and disk operating system (generically), most often abbreviated as DOS, refers to an operating system software, used in most computers, which provides the abstraction and management of secondary storage devices and the information on them (e.g., file systems for organizing files of all sorts). Such software is referred to as a diskoperating system since the storage devices it manages are made of rotating platters (such as hard disks or floppy disks). DOS is the medium through

Disk Operating Systems and Windows

Disk Operating Systems and Windows 
As the name implies, the Operating System is used  for operating the System or the Computer. It is a set of computer programs, which is used to execute a specific task. The single user operating is DOS (Disk Operating System). The main functions of DOS are to manage disk files and allocate system resources according to the requirement. DOS provides vital features to control hardware devices such as Keyboard, Screen, Disk Devices, Printers, Modems and Programs. 

Windows predecessor MS-DOS (Microsoft Disk Operating System)

Introduction 
Windows predecessor MS-DOS (Microsoft Disk Operating System) was the most popular operating system earlier. However, its numerous drawbacks led to the emergence of a new class of system software. Windows, which was a product of this class, was based on a radically different approach called Graphical User Interface (GUI). 
The user is not expected to memorise or type any command; all that he needs to do is click on the appropriate picture (icon) with thehelp

Word Processing Softwere

Word Processing Softwere
Word processing software is used for creating documents. Drafts, letters, reports, essays, write-ups etc can be created using word processing software. Earlier, Word Star was being used widely for this purpose. Sidekick and Word Perfect are also used for drafting letters. However, the most commonly used word processing package in the world is Microsoft Word, which will be discussed later in this book. 
SPREADSHEETS

Computer Language

Computer Language
The computer performs its functions based on the instructions given by the user. The set of such instructions written for a particular task is known as a computer program. Program is the set of instructions that tells the computer how to process the data, into the form desired by the user. 
The language in which a computer program is writtenis known as programming language. The programming languages are classified  as Low-level language and High-level language. 

Generations of Computers and Computer Languages

GENERATIONS OF COMPUTERS
Using size and features as the bases, computers areclassified into various generations. These generations of computers are discussed below: 
FIRST GENERATION
The first generation computers were bulky in size. They were able to execute hundreds of instructions per second and were expensive as well. They used vacuum tubes as their main components. Machine language is a first  generation language, for example EDVAC, UNIVAC etc. 
SECOND GENERATION

Keys for working in the Web module

Keys for working in the Web module

Keys for working in the Print module

Keys for working in the Print module