Definition of different devices of computer

 

Definition of different devices of computer

Components of Computer

Fundamentally, a computer contains of four components

Hardware: The physical or touchable portions of the computer called hardware. Like Monitor, Central Processing Unit (CPU) Keyboard, Mouse, Printer etc. are the samples of the Hardware.  

Software: The set of instructions, that communicates the computer, what to prepare and how to prepare.    

Data: A group of raw facts and information is called data, which can contain script, figures, pictures, audios and videos etc.

User: Computer cannot prepare whichever without its worker.

Barcode Reader:  A Barcode reader (Barcode Scanner) is an electronic device for reading   printing Barcodes. Like a flatbed Scanners.                        

Plotters:  Plotter is an output device. That is used for printing vector Graphics, Charts, Banners etc.    

Mouse:   Mouse is an input device used for video screen cursor control. It has two OR three keys on its upper. The mouse cursor OR pointer move on the Screen and is used for input.

Trackball:     Trackball is also input device. It is like a mouse with some  functions   as  that  of  a mouse . It is like a hard box with a ball at  top . It  is  also  used  in  graphics  software to  select  and  activate  the  menus.       

Touch Screen:     It is an input Device .It is used to  send  input  to  the  computer  screen to select any option  with or menu  a  touch  of  option figures  is sufficient.

 Light Pen:    Light pen is a hand - held is used for input. The pen is a pointer at the screen.

Smart Phone:   Smart Phone is a mobile phone that offers more advance computing ability and connectivity.   

Mail Merge: Mail merge  is an automated  feature  of MS Word that enable  you  to merge  the data source  (A  file  stores  name , Father name  etc.) into a copy  of  document  to  personalize  the document.

Mail Merge is greatest frequently used to print or email form letters to several addressees. Using Mail Merge, you can simply modify method letters for separate addressees. Mail merge is likewise used to generate covers or tags in bulk.

This features everything the similar in all up-to-date types of Microsoft Word: 2010, 2013, and 2016.

In a blank Microsoft Word text, click on the Mailings tab, and in the Start Mail Merge group.

Mail Merge

Wizard:-Wizard   is a computer utility designed to simplify execution of length and complicated tasks.

Drop Cap:-Drop cap is  used  to  format  the paragraph  in different  font  size  and  different  styles .

Text Box:-Text Box  is a  moveable  container  for  the  text  are graphics  or objects . We  can  also move  the  text  from one  place  to  another  place  with  the  help of  text .

Merge Cell:-The combination of two or more cells is also called merge cell.  

Formula Bar:-It is used to enter the formula into a cell. It  is  used  to  show  the  contents and  formula  of  active  cell. It is also used to edit   the contents or formula of active cell.

Status Bar:-It shows the following activities   of current program.

1-     It show the number of document opened.

2-     Show the  current  open  document.

3-     Show the number of pages in open document like 1/10, 5/10 etc. 

 Symbol:- Symbol is  a something  that  represents  an  idea  or  physical  entity .The  purpose  of symbols  is  to  communicate  meaning Example:-/ , *,( ),

Table:-It consists of rows and columns. It is used  to  create  the data  of  different  Companies  and  Banks etc. Like other Programs   In page  also  provides  this  facility   with  different  _table  formats.

Data Types

Alphabetic Data:-It  consists  of  Alphabetic letters  Caps  ( A-Z)  And  Shift ( a-z). For example  VTI ,Computer etc.

Numeric Data:-  It  consists  of  numeric  digits  and  numeric numbers like ( 0-9 )         decimal 

Points Example: - 20, 22, 25.5 etc.

Alpha Numeric Data:-It consists of numeric digits and Alphabetic letters like (A-Z) & (a-z) and special characters like %, $, @, & etc.                  

Sound:-It consists of voice for Example voice of man, voice of birds, voice of animals etc.

Images:-It consists of pictures, charts, Graphics and drawing etc.    

Video:-Representing video data is also called video for Example: - Video Conference.

Pointing:-Representing marks, dots or sign etc is called pointing data For Example: - Arrow, Dots, dash or any symbol

Data management

Data collection:-It is the process of gathering material.

Data Organization:-It is the process of arranging data in some logical order

Data Storing:-It is throes of saving data.

Data Retrieval:-It is the process of recovery of data.

Data Manipulation:-It is the process of re-storing   and re-arranging data.

Data Analysis:-It is the process of cleaning, modeling and solves problems.

Inconsistency:- Inconsistency  means that  two  files  may contain different data  of  same  students .For Example:- If  address of  students is  changed .It must  be  change  in both  files.

SQL (Structured query language):-

Stands for Structured query language. It is not a full featured programming language but rather a data sub language. SQL was developed by IBM .It works with database programs like MS Access, DB2^{, MS} SQL Server, Oracle etc.

IBM:-Stands for International Business machine. The largest Company in the world today. It was introduced in 1953.

Sorting:-Arranging data in some logical orders is called sorting .Sorting order may be Ascending (A-Z) and Descending (Z-A). 

Action Query:- It is a unique feature  in MS Access 2007. It is use to enter data directly in table. The database that already made you can enter new records.

MS Access’s:- Access is a Micro relational database Management System (RDBMS) that you can use to store and manipulate large amount of information .It is a program and is the part of MS office   2007.

Report Wizard: The easiest way to create a report in MS Access guides you to step by step through arranging and selecting data.

Projector: - A projector is a device that takes an image from computer and display on to a larger screen or wall.

Word Count: You can become a character count in a Word file by choosing the "Review" tab and click "Word Count." You can find together the sum of characters with spaces and the character count not comprising spaces. You can enhance the Word Count Dialog box to the Quick Access toolbar so it's continuously single click gone.