write short notes on the following: (1)word processor (2)electronic spreadsheet (3)DBMS (4)presentation software
Answers
The word processor was a stand-alone office machine in the 1960s, combining the keyboard text-entry and printing functions of an electric typewriter, with a recording unit, either tape or floppy disk (as used by the Wang machine) with a simple dedicated computer processor for the editing of text. Although features and designs varied among manufacturers and models, and new features were added as technology advanced, word processors typically featured a monochrome display and the ability to save documents on memory cards or diskettes. Later models introduced innovations such as spell-checking programs, and improved formatting options.
As the more versatile combination of personal computers and printers became commonplace, and computer software applications for word processing became popular, most business machine companies stopped manufacturing dedicated word processor machines. As of 2009 there were only two U.S. companies, Classic and AlphaSmart, which still made them. Many older machines, however, remain in use. Since 2009, Sentinel has offered a machine described as a "word processor", but it is more accurately a highly specialised microcomputer used for accounting and publishing.
Word processing was one of the earliest applications for the personal computer in office productivity and was the most popular application on home and personal computers until the World Wide Web rose to prominence in the mid-1990s.
Although the early word processors evolved to use tag-based markup for document formatting, most modern word processors take advantage of a graphical user interfaceproviding some form of what-you-see-is-what-you-get ("WYSIWYG") editing. Most are powerful systems consisting of one or more programs that can produce any arbitrary combination of images, graphics and text, the latter handled with type-setting capability. Typical features of a modern word processor include font application, spell checking, grammar checking, a built-in thesaurus, automatic text correction, Web integration, and HTML exporting, among others. In its simplest form, a word processor is little more than a large Expensive Typewriter-like machine that makes correcting mistakes possible before printing.
Microsoft Word is the most widely used word processing software according to a user tracking system built into the software.[citation needed] Microsoft estimates that roughly half a billion people use the Microsoft Office suite,[4] which includes Word. Many other word processing applications exist, including WordPerfect (which dominated the market from the mid-1980s to early-1990s on computers running Microsoft's MS-DOS operating system, and still (2014) is favored for legal applications) and open source applicationsOpenOffice.org Writer, LibreOffice Writer, AbiWord, KWord, and LyX. Web-based word processors, such as Office Web Apps or Google Docs, are a relatively new category.
2 - An electronic spreadsheet is a computer application that displays and organizes data. Each data is stored in a cell of a worksheet and can be manipulated using formulas to calculate or change the data in other cells.
Electronic spreadsheets are primarily used to store and organize financial and statistical information, such as income statements, balance sheets and frequency distribution tables. Because of their built-in formulas, spreadsheets let users calculate and readjust numerical results much faster than using traditional pen and paper. Data stored in spreadsheets can also be rearranged to highlight specific information when printed or incorporated into presentations or other documents.
3 - A database management system (DBMS) is a computer software application that interacts with the user, other applications, and the database itself to capture and analyze data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. Well-known DBMSs include MySQL, PostgreSQL,Microsoft SQL Server, Oracle, Sybase, SAP HANA, and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by usingstandards such as SQL and ODBC or JDBC to allow a single application to work with more than one DBMS. Database management systems are often classified according to thedatabase model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQLlanguage. Sometimes a DBMS is loosely referred to as a 'database'.