Computer - 7

Intranet: A private computer network that uses Internet protocols and network connectivity to securely share a part of an organisation's information or operations with its employees

Extranet: A network or internetwork that is limited in scope to a single organisation or entity but which also has limited connections to the networks of one or more trusted organisations

Personal Area Network(PAN): A computer network used for communication among computer devices close to one person

Local Area Network(LAN): A network covering small geographic area, like a office or a building

Wide Area Network(WAN): A network covering relatively broad geographic area(i.e one city to another, one country to another)

Network Topology: Signifies the way in which intelligent devices in the network see their logical relations to one another

Ethics: Core values essential to acceptable online behaviour

Copyright: Exclusive right to produce or reproduce, to perform in public, or to publish an original literary or artistic work

Hacking: An act of penetrating computer systems to gain the knowledge about the system and how it works

Crackers: People who try to gain unauthorised access to computers

Economic Terms and their Meaning


According to Prof.Benham "Demand for anything, at a given price is the amount of it which will bought per unit of time at that price"

Kinds of Demand
Price Demand, Income Demand and Cross Demand
Demand Schedule
A tabular statement of price-quantity relationship
Demand Curves
Graphical representation of demand schedules
Law of Demand

According to Dr.Marshall, "the amount demanded increases

with a fall in price and decreases with a rise in price"

The quantity which a seller is prepared to sell at a given price and at a given time
Supply Curve
The relationship between market prices and the amount which producers are prepared to bring to the market
Law of Supply
The relationship between the price of a commodity and its supply
The process of creating various goods and services, which are consumed by the people of the country
Main Factors of production
Land, Labour, Capital and Entrepreneur