analog digital computer, Lecture notes for Microcomputers. Guru Nanak Dev University
Dogra.Suneel25 July 2017

analog digital computer, Lecture notes for Microcomputers. Guru Nanak Dev University

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Analog Computers Analog Computer is a computing device that works on continuous range of values. The results given by the analog computers will only be approximate since they deal with quantities that vary continuously. It generally deals with physical variables such as voltage, pressure, temperature, speed, etc

On the other hand a digital computer operates on digital data such as numbers. It uses binary number system in which there are only two digits 0 and 1. Each one is called a bit. The digital computer is designed using digital circuits in which there are two levels for an input or output signal. These two levels are known as logic 0 and logic 1. Digital Computers can give more accurate and faster results. Digital computer is well suited for solving complex problems in engineering and technology. Hence digital computers have an increasing use in the field of design, research and data processing.

A hybrid computer combines the desirable features of analog and digital computers. It is mostly used for automatic operations of complicated physical processes and machines. Now-adays analog-to-digital and digital-to-analog converters are used for transforming the data into suitable form for either type of computation. For exaŵple, iŶ hospital’s ICU, aŶalog devices ŵight ŵeasure the patients temperature, blood pressure and other vital signs. These measurements which are in analog might then be converted into Numbers and supplied to digital components in the system. These coŵpoŶeŶts are used to ŵoŶitor the patieŶt’s vital sigŶ aŶd seŶd signals if any abnormal readings are detected. Hybrid computers are mainly used for specialized tasks

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