Objectives Overview
EVOLUTION OF THE INTERNET Internet-> The collection of worldwide networks. SEPTEMBER 1969 GOALS!!-Allow scientists at different physical locations to share information and work together. -Function even if part of the network were disabled or destroyed by a disaster 1969 APRANET => 1984 +1K host =>1986 NSFnet connect to APRANET =>1995 NSFNet resumes status as research network =>1996 Found Internet 2 => Today 550 million hosts Access Provider define as a business that provides individuals and organizations access to the internet free or a fee. High speed internet service include Cable internet service,DSL (Digital Subscriber Line),Fiber to the Premises(FTTP),Fixed Wireless,Cellular radio network,WI-FI,Satellite internet Service. ISP (Internet Service Provider): Provide internet access to a specific geographical area OSP ( Online Service Provider): Has many members-only feature Wireless Internet Service Provider : Provide wireless internet access to computer and mobile devices. How Home user data travel through the internet:- For Example : Type google in address bar=>>modem transfer data from computer to a central server=>>info passing fibre optic in high speed to the cable operator (ISP)=>>ISP route through the internet backbone to the server=>>Web page displayed IP Address is a number that uniquely identifies each computer devices connect to the internet. Domain Name is the text version of and IP Address DNS Server translate the domain name into associate IP address Example of web browser : Chrome,Safari,Internet Explorer,Mozilla firefox,Opera A Web Page have a unique address called URL or Web Address Tabbed Browsing allow us to open multiple of web pages in a single web browser. Types of search tools:- -Search Engine. Search information in a more specific way -Subject Directory. Classifies web page in an organized set of categories The 13 types of websites:-----
MULTIMEDIA
E-commerce Definition: A business transaction that occurs over an electronic network Ex: Business to Consumer,Business to Business,Consumer to Consumer Netiquette Definition : A code of acceptable Internet behaviour For Example : Emoticon,Acronym SUMMARY
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Objective Overview 1.Explain why computer literacy is vital to success in today's world. 2.Define the term,computer,and describe the relationship between data and information. 3.Describe the five components of a computer. 4.Discuss te advantages,and disadvantages that users experience when with computers. 5.Define the term,network, and identify benefits of sharing resources on a network. 6.Discuss the uses of the Internet and World Wide Web. 7.Distinguish between system software and application software. 8.Differentiate among types,sizes,and function of computers in each category. 9.Describe the role of each element in an information system. 10.Explain how home users,small office/home office users,and enterprise users each interact with computers. 11.Discuss how society uses computers in education,finance,government,health care,science,publishing,travel,and manufacturing. Computers are everywhere in the world Definition: A computer is an electronic device,operating under the control of instruction stored in its own memory. For Example, Data Collection>Process> Produce Info. Component of Computers:- -Input Device -Output Device -Storage Device -System Unit -Communications Device Pros and Cons of using Computers Pros:
Green Computing Definition: Reducing the electricity consumed ad environment waste generated when using a computer. Network Definition: A collection of computers and devices connected together,often wirelessly,via communications devices and transmission media. Internet Definition: Internet is a worldwide collection of networks that connect millions of individual. Variety of Internet Usage: -Communication -Shopping -Online Trading -Entertainment -Banking and Investment -Research and information access Computer Software Definition:Software,also named as PROGRAM.Instruct the computer what tasks to perform and how to perform them. Software Installation Process Step 1: Install Step 2: Run the program Step 3: Start Use Categories of Computer:-
Element of and Information System
(PEOPLE) makes (SOFTWARE) to sort (DATA) -> (PEOPLE) enter (DATA) into (SOFTWARE) to be processed -> (HARDWARE) processes (DATA) using (PROCEDURES) -> (HARDWARE) gives output Types of Computer Usage:- -Home User -Small Office/Home Office User -Mobile User -Power User -Enterprise User Computer Applications in Society:- -Education -Finance -Government -Health Care -Science -Publishing -Travel -Manufacturing SUMMARY
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