411 REFERENCE · Wikibooks
Electronics Communication/Information & Signal
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Information
Information is a term used in communication to describe any physical quantities called
/Sound/ like audible human voice, noise
/Audio/ like music
/Image/ like pictures
/Motion picture/ like movies
/Data/ like alphabets, decimal numbers
Signal
Signal is a wave of certain frequency that represent the information
Sound audible to human ears is a wave of frequency range 20Hz - 20KHz
Image transmit as a wave of bandwidth of 3MHZ wide
Movie Picture transmits as a wave of bandwidth of 5MHZ wide
Data transmits number of Bits Per Second (BPS)