2.1 Analog vs Digital

Electrical – uses electricity as power

–ex: Vacuum, hair dryer, fan, flashlight etc..

Electronic – uses electricity as power

–ex: car, computer, dishwasher, telephone

{everything that is electronic is electrical; not everything that is electrical is electronic}

Put in order!!

  • microphone
  • phonograph
  • electrodynamic microphone / speaker
  • vacuum tube
  • amplifier
  • semi-conductors
  • transistor
  • modern computer
  • radio
  • inexpensive consumer radios and stereos
  • digital sound recording
  • Internet music

Analog vs Digital

  • Analog : a wave is recorded/ used

 

  • Digital: The waves are more discrete as well as represented by square waves
    • which means there is a finite amplitude level.

source  : A vs D

 

 

  • Make a list of the disadvantages NYC faced in switching to electronic traffic lights.
    • bugs
    • could be distorted virtually
  • Make a list the advantages NYC faced in switching to electronic traffic lights.
    • no usage of a mechanical timer
    • can control it from central command center
    • could fix it virtually
  • Explain whether or not NYC did the right thing by switching from electrical to electronic traffic lights.
    • well from personal experience, NYC did the right thing iun most cases, but sometimes the traffic light changes too quick to the point where it just breaks and stay like that for months.
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