6Transmitting+&+Recieving

Definition of Transmitting and Recieving Transmitting and receiving is the transfer of data and information within and between information systems. This is achieved through either parallel or serial transfer. Parallel transfer transmits more than one bit of data simultaneously using seperate lines (e.g. Apple's Thunderbolt). Whereas, serial transfer transmits one bit of data through a single line, (e.g. a remote control car or radio).Half Duplex is when the lines are shared in either direction (e.g. walkie talkies or cars sharing the road on a narrow bridge). Full Duplex is parallel transfer and is the data flow in both ways at the same time (e.g. video chat, mobile phone or cars on a motorway).

Hardware used for Transmitting and Recieving Hardware for transmitting and recieving includes modems and networks as well as the internal components of the computer. Communication within the computer Internal bus Expansion bus Ports Modems Internal and External Networks

Software used for Transmitting and Recieving Communications software manages the transfer of data, files and commands between computers.The protocol is a set of rules that governs the transfer of data. Computers have to have the same protocols to exhange data. There are a number of different protocols for networks, including Ethernet and Token Ring. Sofotware used for transmitting and recieving includes the compression of data, encryption and email. Compressing is used to transmit data of large quantities. Emails allow for 10MB of data to be transmitted, so it is necessary to compress the files sent. If there are multiple files, they can be compressed in a zip file. Compression is either lossy or lossless. Encryption secures the transmition of data. The most basic form of this is Caesars cipher, but can be as advanced as AES or SSL. Encryption is needed as it ensures the safety of important personal or private information. Encryption software scrambles up the data so that it's unrecognisable any person who tries to access it. Email is a form of transmition of data, through electronic messages exchanged through a computer. These messages are usually short are written offline and sent when the user logs onto the internet. Although email is becoming less popular as people are moving onto more instant forms of transmition.

Non-comp tools for Transmitting and Recieving

Social and Ethical issues for Transmitting and Recieving Ethical issues include accuracy, e-commerce's affect on traditional business, netiquette and privacy. Accuracy on the Internet is directly relatted to the nature of Web 2.0. With the wealth of information avaliable and the types of people authoring said information (anybody who has access to the Internet) the accuracy of the content being authored is hard to control. In other words anyone can write anything they want whether or not it is true. E-commerce has affected many traditional buisnesses mainly in the retail and shopping sectors. E-commerce has affected traditional shoping as people oftne prefer the convienece and cheap costs that are provided by online shopping. This has decreased company profits as many people choose to isntead buy their goods online instead of visiting traditional stores. Netiquette is Internet etiquette - the informal rules of behaviour to be followed when using the Internet. These Internet customs have evolved over time, and help make the Internet a pleasant place. There are netiquette guidelines for most Internet resources, including e-mail, mailing lists and newsgroups.It is all the more important on the net because there are no facial clues or body language to help us understand another person, as there is in face to face meetings. Privacy is a rapidly growing issue as people are able to gain other's personal information through techniques such as hacking into website accounts such as bank details, home addresses and phone numbers as well as credit card details.A cookie is a file that is is put on the user's hard disk and record information for websites about the visitors to their site storing info regarding the date and time it was visited and the transactions completed.