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Computer Interface

Command Line Interface (CLI)

-User has to type in instructions and choose from the menu in order to open an application

-many instructions needed to carry out 1 task

-very slow and prone to errors

-user needs to have computer knowledge

+ : users have direct communication with computer.hence greater flexibility

Graphical User Interface (GUI)

-user use pictures (icons) to interact with computer just by clicking

Communication System Video conferencing

-system that allows people to have conversations and meetings with other people anywhere but without leaving their office.

-Features of Video Conferencing:

*microphone

*webcam

*loud speaker

*Internet/WAN/Local Network

*Video Images are seen real time

*Compression software(reduce amount of data being transmitted over network)

*CODEC software(converts and compress analogue data into digital data)

*Echo Cancellation Software(to maintain synchronisation of communication

Electronic mail

-system that allows messages to be sent and received by computers.

Voice Over Internet Protocol (VOIP)

-system that allows user to talk to another user using internet via...

computer computer

computer mobile Phone

Computer land line phone

by..

>plugging in compatible telephone via USB

>using headset