Flashcards
Data transmission: simplex, duplex, serial and parallel
Cards in this deck (7)
- 1Data TransmissionsAgreed Factors
1) The direction of data transmission
(i.e. in one direction or both directions)
2) The method of transmission (how many bits are sent at the same time)
3) The method of synchronisation between the two devices - 2Simplex, Half-duplex & Full-duplex1) Simplex data transmission is in one direction only
2) Half-duplex transmission is in both directions but not at the same time
3) Full duplex data transmission is in both directions simultaneously - 3ExamplesWalkie-Talkie - Half duplex
Phone - Full duplex - 4Serial TransmissionSerial transmission is one bit at a time. Devices that use serial data transmission are mice, keyboards and modems.
- 5Features of serial data transmission- Data is transmitted one bit at a time over a single cable.
- Cable is cheaper as a result
- Serial transmission can be used over large distances. - 6Parallel TransmissionParallel transmission sends 8 bits at a time. Examples that use parallel transmission are printers, scanners and anything else that plugs into the back of a computer.
- 7Features of parallel data transmission- Speed - bits are sent in parallel so more bits are sent at one time.
- Cable length - cross talk (interference) can corrupt the data.
- Less complex and easier to add to this technology.
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- Flashcards on Untitled, created by Samuel Marsh1803 on 16/10/2015.
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- Samuel Marsh1803
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