Difference between Analog and Digital Computer

Main difference between analog and digital computers is how they handle and process the data. Digital computer functions by receiving & computing data converted in binary form (0 and 1) while Analog computer functions continuously, no matter what the variations are in the input i.e temperature, current.

Analog Computer

 analog computer

Analog computer is a type of computer which functions continuously, no matter what the variations are in the input. These variations may include instability in current, temperature, electric and mechanical parts. The best examples of an analog computer are Oscilloscopes, thermostats, and thermometer.


In the beginning, the analog computer was mostly used for the purpose to calculate the electrical signal, voltage, resistance of the capacitor, etc. It is not easy to work with an analog computer. Large `numbers of electrical, mechanical peripheral and supporting devices are needed in order to function it accurately.

Digital Computer

 digital computer

The digital computer is a type of computer which receives and computes the data converted in binary form. It is most commonly used in all fields of life. Generally, it is an electronic device. The major types of digital computer are:

  • Personal Computers/ Microcomputers
  • Minicomputers (midrange computers)
  • Mainframe computers
  • Supercomputers
  • Servers
  • Workstations
  • Embedded computers
  • Desktop Computers
  • Hybrid computers

The digital computer gets input and functions in a discrete manner also. So, the Input may consist of letters, digits represented in binary language. The binary code consists of two basic digits 0 and 1. These two digits stand for true and false, no and yes, left or right.

Here it the list of major differences between analog and digital computers.

What is The Difference between Analog and Digital Computer?

difference between digiraMain difference between analog and digital computers is the way they process data. Analog computer functions continuously. Examples: Oscilloscopes & thermometer. While the digital computer gets Input which may consist of letters, digits represented in binary ( 0 & 1) form. Examples: personal & supercomputer.

  • Accurate result
  • Output Devices
  • Electronic Circuits
  • Working Pattern
  • Functioning
  • Usage
  • Memory
  • Noise or Disturbance Problem

Accurate Result

Digital technology is latest and modern than analog technology but analog technology still produces more exact and accurate output as compared to digital.

Output Devices

The digital computer displays result of input on screens like monitors, LCD or LED while the analog computer shows the results in the form of voltage signals and reading on the attached meters.

Electronic Circuits

When we talk about electronic circuits, the digital computer almost uses two switches on and off. While on the other hand analog computer uses signals generators, operational amplifiers and several resistors for continuous signals flow.

Working Pattern

The digital computer evaluates and executes work in a discrete way. However analog computer generates results in a continuous way.


Due to advancements in technology, the digital computer is now also capable of performing functions of analog computers but an analog computer does not have the ability to perform the function of a digital computer.



Digital computers are commercially suitable and useable all over the world. The use of digital computers is most compared to an analog computer.


The digital computer does not have any memory such as a disc, drive, and chip, etc. However digital computer almost requires memory like hard disk, flash storage or memory chips in order to function properly.

Noise or Disturbance Problem

While measuring environmental accuracy, noise can also affect the accuracy of the analog computer. But noise and disturbance cannot affect the digital computer.


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