What are the types of computer on the basis of working principle? Difference between Analog Computer & Digital Computer
1) Analog computer
- Analog computers are different from a digital computer because an analog computer can perform several mathematical operations simultaneously. It uses continuous variables for mathematical operations and utilized mechanical or electrical energy. The computer which process analogue quantities (Continuous data) is called an analogue computer.
- These computers represent data in the form of continuous electrical signals and uses physical quantity like, electric current, voltage, temperature and pressure of a boiler system.
- It is based on analog mechanism
- An analog computer is the one that measures physical values such as: temperature, pressure and speedometer, thermometer, multi-meter etc.
- These are fast and multi-tasked.
- Result displayed by these computers are less accurate.
- Analogue computer are used in hospital to measure the size of stone in kidney and mental disease diagnostics (CT scan with photos).
- Powerful in solving differential equations
- These computers use OP-AMP (Operational Amplifier).
2) Digital Computers:
- These are called the digital information processing systems.
- Accuracy is higher than analog computer
- Handles only discrete signal/data
- The computers based on digits i.e. 0 and 1 are called digital computer.
- The computer that handles the discrete signal is called digital computer.
- Digital signal represents particular state that is: 0 (low) or 1 (high), yes or No, On or OFF, TRUE of FALSE.
- These systems store and process the data in digital form (strings of 0’s and 1’s)
- They are capable of processing analog signals but the analog signals have to be converted into digital signals using an ADC before feeding into the digital computers.
At last,
Analog computers – Measuring principle
Digital computers – counting principle
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