2. NETWORKING

3. CLASSIFICATION OF COMPUTERS * Size *Cost *#of users *Storage capacity

4. 1st Classification MICROCOMPUTER SINGLE USER

5. 2nd Classification WORKSTATION Many processors Expensive More complex functions

6. 3rd Classification MINICOMPUTER SPECIALIZED FOR SMALL BUSINESSES

7. 4th Classification MAINFRAMES

8. Controls an entire system: NASA

9. NETWORKS TELECOMMUNICATIONS Two or more computers communicating Long distance communications

10. Design Considerations What type of modems and cables are needed? Is the telephone system needed? Is the geographical area of the network a consideration? Is all that is needed the hardware? Why should I use the network?

11. ADVANTAGES File sharing Software sharing Hardware sharing Information sharing

12. DISADVANTAGES Need for extra hardware Need for network software Need for security COST –maintaining/implementing/controlling

13. Why are networks used?

14. BENEFITS outweigh Installation Costs

15. Networks are used for:

16. 2 types of TRANSACTION PROCESSING Centralized data processing – all processing done in one place Distributed data processing – processing done on several processors –Faster (can share files/data) –Requiress a network

17. Way the Processing is Done Contributes Directly to the Physical Classification 2 Network classifications by physical distribution of data to be processed.

18. 2 Network Classifications Client server Peer to Peer

19. Client Server Configuration One computer provides services for all other computers in the network. Types of servers: print servers file servers communication server Thin client – a client that has no storage capability

20. Peer to Peer Configuration All computers are stand alone units. They may communicate but do not need each other for processing services.