GENIUS KNOWLEDGE PART-4

Information Network.

1.LAN--- THE LAN (Local Area Network) is a system whereby individual PCs are connected together within a company or organization.

2.WAN--- THE WAN (Wide Area Network) as the name implies allows you to connect to other computers over a wider area.

Uses of Network

If ten people are working together within an office it makes sense for them all to be connected.

• In this way the office can have a single printer and all ten people can print to it. 

• In a similar way other devices such as modems or scanners can be shared. 

• Even more useful is the ability to share 

information when connected to a network.

Computer Accessories.

1.Modem

Short for “MODulate/DEModulate”. The modem sends information from your computer across the telephone system.

The modem at the other end of the phone line, converts the signal back into a format that can be used by the receiving computer.

Uses of Computer.

PC at Home

Common uses for the computer within the home

1.Computer games.

2.Working from Home.

3.Banking from Home.

4.Connecting to the Web.

Computers in Education.

*CBT (Computer Based Training)

Computer Based Training (CBT) offers a low cost solution to training needs where you need to train a large amount of people on a single subject.

These programs are normally supplied on CD-ROM and combine text, graphics and sound. 

Packages range from general encyclopaedias right through to learning a foreign language.

Office Application.

*Automated Production Systems.

Many car factories are almost completely automated and the cars are assembled by computer-controlled robots. 

This automation is becoming increasingly common throughout industry.

*Design Systems.

Many products are designed using CAD (Computer Aided Design) programs to produce exact specifications and detailed drawings on the computer before producing models 

of new products.

Office Applications

*Stock Control

Stock control is ideal for automation and in  many companies it is now completely computerized. 

The stock control system keeps track of the number of items in stock and can automatically order replacement items 

when required.

*Accounts / Payroll

In most large organizations the accounts are maintained by a computerized system. 

Due to the repetitive nature of accounts a computer system is ideally suited to this task and accuracy is guaranteed.

Computers in Daily Life

1. Accounts.

2. Games.

3. Educational.

4. On-line banking.

5. Smart ID cards.

6. Supermarkets.

7. Working from home (Tele-working).

8. Internet.