EECS 1520 Lecture Notes - Lecture 3: Mercury-In-Glass Thermometer

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Avi Cohen

Document Summary

Continuous representation, analogous to the actual info it represents. Discrete representation, breaking the info up into separate elements. Mercury thermometer continually rises and falls in proportion with temperature, it provides in nite precision, limited by our ability to measure its value. Digital data example digital clock shows discrete information. What are bytes? a group of 8 bits is one byte, symbol: b. Why is information digital and binary? computers discretize the data and digitize values to understand it, representing 1 of 2 states is cheaper and reliable hence why it is binary. Analog continually uctuate in voltage, whereas digital have only a high (1) or low (0) state. What is degradation? both analog and digital, they degrade as they move down a line, voltage uctuates due to environmental effects only with analog signals, it is unavoidable and permanent. Electronic signals can re- clock a digital signal to regain.