Analog and Digital

Discussion in 'General Electronics Chat' started by ElectronicsGoddess, Aug 19, 2005.

  1. ElectronicsGoddess

    Thread Starter New Member

    Aug 19, 2005
    Can someone give me a good description of analog and digital.

  2. Erin G.

    Senior Member

    Mar 3, 2005
    In the most simple terms, digital is 1 or 0, ie on or off. Analog is continuous.

    Though opinions vary, one is not always better than the other. The right signal / source depends on the specific application.
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    Digital: Room is Occupied or Unoccupied
    Analog: Room contains four adults, two children, and a dog

    Digital: Steak is Raw or Cooked
    Analog: Steak is slightly on the pink side of medium-rare

    Digital: I am old or I am young
    Analog: It has been 44 years, ten months, and a few days since I was born

    When used in applications, Digital provides distinct "steps" with no in-betweens. Each step would be a set value. Values between the set steps would be resolved as either the previous step or the next step.

    Analog has no steps - it is not a "stairway" but rather a "hill."
  4. Erin G.

    Senior Member

    Mar 3, 2005
    Thanks, thingmaker3, for your hysterical and very accurate description of analog / digital differences. I'd like to borrow that in the future, though not in this forum, ofcourse.