Perfect Computer Notes

Q.1 Define Data and Information. Differentiate between Data and Information. DATA Data is the collection of raw facts and figures. It is without any proper meaning. Data may be collection of words, numbers, graphics or sounds. Examples of Data 1) When students get admission in a college. They fill admission form. This form contains raw facts (data of student) like name, father’s name, address of student etc. 2) During census, data of all citizens is collected. INFORMATION Processed data is called information. When raw facts and figures are arranged in some order then they become information. Information has proper meanings. Information is useful in decision-making. Actually we process data to convert it into information. Exapmle of Information: 1) Stored data of students can be used to print address labels of students. 2) Census data is used to get report/information about total population of a country and literacy rate etc. Q.2 Describe types of Data. Ther

Q1. Define Network with example. Give importance of computer network.   COMPUTER NETWORK A computer network is a set of two or more computers connected together to share information and other resources. The computers in a network can share: Data, information  and Files Resources (printers, Cd-Rom Drives, DVD- Rom Drives, CD- Writers, hard disk, modems) Programs / software EXAMPLES OF COMPUTER NETWORK Computer network can be used in an organization's office. Different employees and managers in the office and organization can share common information. Internet, is also an example of a computer network. Internet is a network of millions of computers connected through phone lines. People can share information, files and talk with one another through internet. Internet cafe also uses computer network for internet sharing on all computers. A Computer laboratory in a school or college may use local area network for sharing data and other reources like printers, Cd-

Q.1 What is internet?             Internet is the network of networks around the world. It is made up of thousands of smaller networksInternet provides following main facilities:  ·  E- mail                    ·   Chat           ·Searching  jobs    ·       Advertising for business            ·E-commerce     ·Searching information Q.2 Define :WWW, ISP, WEB PAGE, WEB SITE, WEB SERVER, WEB BROWSER WWW stands for World Wide Web. It is also called web. It is the collection of all connected web documents stored on different web servers. WWW has many advantages: · finding a job    ·      searching information ·          e-commerce · education · advertisement for business   ·         weather forecast  ·     entertainment ISP stands for internet service provider. It is a company that provides internet connections to users. For example WOL net, PAK net, CYBER net etc. are ISPs. WEB PAGE:      A document created by HTML and found on web is a web page. A web page contains information in the