EECS 1520 Study Guide - Final Guide: Cinepak, Wav, Gramophone Record

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Gerald Goldberg

Document Summary

Information: data that is organized to solve problems. Today, computers are multimedia , dealing with vast info categories. Helps to modify many different types of data into numbers, text, audio, images and graphics and video. Data compression: reducing amount of space to store piece of data. Bandwidth: number of bits or byes that can be transmitted from one place to another in fixed amount of time. Compression ratio: size of compressed data / size of original data. Lossy compression: some info is lost from compaction. Data can represented in two ways: analog or digital. Analog: continuous representation, analogous to actual info it represents. Instead we digitize data by breaking into pieces and represent those pieces separately. Digital: discrete representation, breaking info up into separate elements. Also electronic signals are far easier to maintain. Digital signals jump sharply between two extremes; behaviour called pulse-code modulation. Any voltage value above threshold=high value and value below is low value.