T10L3 studying for quiz Flashcards
what did Samuel Mores invent
telegraphs
what did the difference between analog and digital signals
analog signals allows a continuse record of some kind of action ; A digital signals allows numerical signals to flow through.
what is the difference between electronic and electromagnetic signals
electronic is sent by mores code ; electromagnetic is sent by light and microwaves.
which is conintuoues
analog
Is electronic or Electromagnetic signals faster, more flexible,and requires more wires.
electromagnetic
how does sampling rate relate to the quality of a recording
the higher the sampling rate the higher the quality
what form of energy do electronic signals travels by
the flow of the current
which frequency do phones use
ultra high Frequency
which frequency do submarines use
extremely low frequency
what are some disadvantages to digital recordings
you do not have to record any of the signals that occurred between each sample
how would you define a sampling rate
how often a signal is recorred and converted to digital.
what is a byte
a basic unit of storage capacity
what is a real life example of electromagnetic signals that you use everyday
phones and radios
how does a computer convert sound waves into binary code and back to sound waves again
microwaves
what are pixels and how does the amount of them affect quality of an image
a pixel is a small uniformed shape that make a bigger image; that more pixels there are the more detail there is
