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What are the differences between digital and analog computer?


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Answered 2012-04-11 06:46:23

Digital Computers works on digits like-0 and 1 .

Analog Computers works in continuous variable .Input source for these computer should be Analogu. example thermometer,speedometer, ammeter.

They are mainly used in scientific,research field and medical field

Analog computers (there are still some out there) use linear combinations of voltage amplitude (or currents or frequencies or phases) from the inputs to determine the required output sequence; digital computers use two-state variables that are either "on" or "off" (true or false, 1 or 0, yes or no) as logical building blocks to derive a digital output sequence from the digitized input. Digital signals may also be converted to analog, and vice versa, so you could have a series of a/d converters, a digital computer, and d/a converters to simulate an analog computer, or a communication channel, as in digital telephones.

Answer--The difference between an analog and digitial computer is the type of data they process. Analog computers process measured data. A speedometer in your car is a common type of analog device. A digital computer processed descrete data (digits). In this case 0 and 1. Digital computers are most common. PC's, MAC's are digital computers. A big difference is an analog computer's output can vary even if the input is identical. A digital computer can be very precise. For instance, a gas pump might tell you that you pumped in 5 gallons of gas but you could have gotten 4.99 gallons or 5.01 gallons. If you asked a digital computer to add 5 and 6 together, you will always get 11. By the way. A gas pump is actually a hybrid computer. Although it processes measured data, that is how much fluid has passed through the gas hose, the data displayed to you, the amount of gas and how much you owe is in a digital format.

An Analog computer uses continuous variables for mathematical operations and utilizes mechanical or electrical energy.

The difference between an analog and digitial computer is the type of data they process. Analog computers process measured data. A speedometer in your car is a common type of analog device. A digital computer processed descrete data (digits). In this case 0 and 1. Digital computers are most common. PC's, MAC's are digital computers. A big difference is an analog computer's output can vary even if the input is identical. A digital computer can be very precise. For instance, a gas pump might tell you that you pumped in 5 gallons of gas but you could have gotten 4.99 gallons or 5.01 gallons. If you asked a digital computer to add 5 and 6 together, you will always get 11. By the way. A gas pump is actually a hybrid computer. Although it processes measured data, that is how much fluid has passed through the gas hose, the data displayed to you, the amount of gas and how much you owe is in a digital format.

An Analog computer uses continuous variables for mathematical operations and utilizes mechanical or electrical energy.

Analog computers, also called continuous computers, calculate smoothly changing variables using direct analog representations of those variables (e.g. 1V per 1000 gallons of water).

Digital computers jump suddenly at intervals from one coded value of a variable to another. Most modern digital computers use binary codes to represent these values: whether the values are integer numbers, real numbers, symbolic characters, etc. The exact binary representation of each data type is coded differently. Values between defined codes for a given type cannot be represented on a digital computer.

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