1.2.1 Data Transmission Flashcards
What are facts about serial data transmission?
single wire one bit at a time used for long distance reliable cheap slow example is internet or USB
What are facts about parallel data transmission?
multiple wires up to 8 bits at the same time used for short distance not as reliable as serial expensive fast example is transmission inside a computer
What are examples of simplex data transmission?
computer to printer
CCTV
computer to monitor
computer to speaker
What are examples of (full) duplex data transmission?
telephone call
video conference (google meet/zoom)
whatsapp call
online gaming
What are the kinds of signals used to transmit data?
wireless signals (radio, microwave, infrared waves) electrical pulses down metal cables pulses of light down fibre-optic cable
Describe simplex data transmission
one direction only
Describe half-duplex data transmission
both directions - but not at the same time
Describe (full) duplex data transmission
both directions - same time
What is an example of half-duplex data transmission?
Walkie-talkie
What’s an example of long distance data transmission
internet
What’s an example of short distance data transmission?
bluetooth (wireless)
inside a computer
Data is transmitted in one of 3 ways
simplex
half-duplex
(full) duplex
What kind of data transmission is this?
single wire, one bit at a time, cheap, reliable, slow, used for long distance
serial
What kind of data transmission is this?
multiple wires, up to one byte at a time, expensive, fast, not very reliable over long distance, used for short distance
parallel
What type of data transmission is one way only?
simplex
