Introduction to Analog and Digital System STLD/Digital Electronics by Ravinder Nath Rajotiya - July 30, 2019May 10, 20210 Analog signal and Digital signals Everything in real world is analog, the audio we hear, the scene we see in front of our eyes, the environment parameters like, humidity, temperature, atmospheric pressure and so on are all example of analog signals. In earlier time may be way back in 80’s and before, these analog quantity were measured and displayed in analog format. VCRs, tape players, and record players are analog devices. This is because they record data linearly from one point to another. Analog devices read the media, such as tapes or records, by scanning the physical data off the media. The data on the records are the exact and the real information. Difference between analogue and digital systems Therefore, due to enormous
1 Number System STLD/Digital Electronics by Ravinder Nath Rajotiya - July 30, 2019April 20, 20210 Number System: In every day life we encounter with objects that are to be counted and written to be understood by all. The represented number also may require addition, subtraction etc. So, number system is a way of representing the count of some objects or countable things using some well define symbols and on which some kind of operation can be performed. Number may be called as real numbers. The real numbers is the set of numbers containing all of the rational numbers and all of the irrational numbers. The real numbers are “all the numbers” on the number line. All numbers can be categorized as shown in figure-1. Classification of Number System These are the codes that are used in representing the information in