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What do you think? HOW IS IT??? Would anyone care to comment if you think what I am doing is helpful, and what you think of the information, your input would be greatly appreated... Thankyou

Electronic commerce Electronic commerce, or e-commerce, is the buying and selling of goods and services via the internet. EFTPOS EFTPOS (electronic funds transfer at point-of-sale) is a system that allows people to purchase goods and services using a credit or debit card. Electronic...

Messaging systems A messaging system is used to send messages to people in different locations who may receive the message at a later time. Traditional systems A telephone is a system for transmitting sounds or speech between distant locations along telephone lines. A fax, or facsimile...

Teleconferencing Teleconferencing is the use of an electronic transmission to allow a meeting to occur at the same time in different locations. An audio conference is a single telephone call involving three or more people at different locations. A video conference is a meeting that allows...

Communication settings A parameter is a variable that is given a constant value for a particular application. Bits per second is the speed of transmission, such as 56000. Data bits are the number of bits in each group of data. Parity is whether the data contains a parity bit for error...

Error checking Three common methods for error detection are parity checking, checksum and cyclic redundancy check: Parity checking is a method of checking for errors in data transmission using an additional bit called a parity bit. Checksum is a method of checking for errors in data...

Speed of transmission The bandwidth is the capacity of the channel, or tansmission medium. The speed of data transfer is measured by the number of bits per second or by the baud rate: Bits per second (bps) is the maximum number of bits that can be transmitted in one second. Bps is also...

Handshaking Handshaking is an agreement about which protocol to use to accomplish the exchange of information. There are two methods of handshaking to control the flow of data: Hardware flow control uses a dedicated connection, such as a wire. Software flow control uses a special code sent...

Protocols A protocol is a set of rules that governs the transfer of data between computers. The OSI reference model divides data communication into seven layers.

Characteristics of communication systems A communication system enables people to send and receive data and information. All communication systems have five basic components: 1 The data source produces the data to be sent. 2 The transmitter encodes the data into a signal suitable for a...

This will contain information about Communication Systems. I will post notes myself about this topic, any arguments you have about what I or anyone else has said, feel free to express them. If you have information on this topic which may be helpful, please feel free to write it here...

:confused: This thread was created for you to post notes or key concepts here for others to read. Examples, networks, protocols, project work, etc. Please keep posting, the exam is FRIDAY. I'll post some notes myself tomorrow. LittLe_DeviL