The term noise means the random signals picked up by waves. Radios may crackle or internet may looses connection. This effects analogue signals badly as each time it is amplified the noise also gets amplified, this alters the signal making it hard or impossible to identify as the original signal.
In digital signals any noise picked up is likely to be of a smaller amplitude than that if the on state, this means something receiving it will ignore the noise as it is neither on nor off, this makes them less likely to be distorted.
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ReplyDeleteoh no :( I tried but couldn't find 3.25 "describe how digital signals can carry more information" under the label 'Light and Sound' or 'Section 3' :)
ReplyDeletehttp://hannahhelpphysics.blogspot.co.uk/2013/04/325-describe-how-digital-signals-can.html
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These blogs are great but I can't for life of me understand why you can never spell lose correctly xD
ReplyDeleteyou are a goddess srsly this is so useful you cld charge ppl for this
ReplyDelete'may looses'? what is this shit? are you illiterate?
ReplyDeleteHave some bloody respect for a person who is taking time off of her hands to provide useful information for our exams. Shame on you.
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