Computer and Information Technology part -4

A word processor is an application software that is mainly used to produce, edit and format text-based documents. Microsoft Word is a popular word processing software of Microsoft office. WordStar is also a word processor developed by Micro Pro International while Page Maker is a word processing software of Adobe.

MS Word is primarily used for Processing text data. It's a word processor designed for creating, editing, formatting, and printing text-based documents.

Word processing, spreadsheet and photo editing are the example of application software. Some more application software are video and audio editing, desktop publishing , computer-Aided Design (CAD) etc.

Word processing, spreadsheet and photo editing are the example of application software. Some more application software are video and audio editing, desktop publishing , computer-Aided Design (CAD) etc.

The basic unit of excel spreadsheet where data is entered is called the cell. It consists of a row and  columns.

Computer file have two parts to their name - a descriptive name and a file extension. A file extension is a part of the file name and uniquely identifies the type of the, also referred as format of the file. For example  .doc is a file created  by Microsoft Word. Similarly .mp3 is a music  file  that can be opened by any application which  handles MP3 file.

Among the given file format, .MP3 is a audio file format while .MP4, .MOV (MPEG4 Video) and .AVI are video file formats.

Transistors were used in the second generation computers. A second generation computer, is a type of computer that ,as opposed to vacuum tubes (of first generation computers), relies on descrete transistors as its principal component to do the processing .

Integrated circuits (ICs) are used in the third generation computer. This circuit was invented by Jack Kilby and Robert Noyce. The electronic circuit formed by constructing electronic components  like transistor ,resistor, and capacitor on a small piece of semiconducting material is called integrated circuit.

Integrated circuit is a set of electronic circuits on one small plate of semiconductor material normally silicon. After its invention in 1958, it is used in place of transistors in the computer and hence we can say that miniaturization of present day computers has been possible due to these integrated circuit units.