Flashcards

eeeee

Alex G English 14 cards

Cards in this deck (14)

1What is serial transmissionSingle bits are sent over one wire
2What is parallel transmissionSignals are sent simultaneously over a number of parallel wires
3What is skew in parallel transmission?When the signals travelling down parallel wires arrive at the destination at different times
4How do we solve the problem of skew?We only use parallel transmission over short distances.
5What is an ICAn Integrated circuit is a chip made from semiconductors which assembles transistors and resistors sending data in parallel
6Advantages of serial over parallel transmission-Its simpler
-its cheaper
-"crosstalk" creates interference in parallel which can corrupt data
-serial links are more reliable
7What is simplex transmission?Data travelling in only one direction such as in keyboards
8What is Half Duplex data transmissionData can travel both directions but only one direction at a time
9What is full duplex transmissionData can travel in both directions at the same time across two cables
10Where is full duplex usually used?In fibre optical networking or Internet cables for upload and download
11Where is half duplex data transmission usually usedUsed in parallel printer cables: text is sent to a printer, and the printer can send ‘Out of paper’ messages back, but only when the computer has finished sending text
12What is Bitratethe rate at which bits are transferred from one location to another
13What is Bauda unit of transmission speed equal to the number of times a signal changes state per second. For signals with only two possible states one baud is equivalent to one bit per second.
14What is bandwidththe maximum data transfer rate of a network or Internet connection. It measures how much data can be sent over a specific connection in a given amount of time.