Electrical and Computer Engineering 2277A/B Lecture Notes - Lecture 1: Radix, Octal
27 Dec 2020
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Document Summary
Gate-level logic is the fundamental basis of computing systems. Designed to store and process discrete elements of info, typically through computation. The discrete elements tack the form of numbers, letters of the alphabet (ascii), musical notes, sampled data, etc. Binary is a coding systems with exactly two symbols: 0 and 1. Depending on how we choose to interpret a sequence of those symbols, that sequence can represent any of the those discrete elements. A sequence of bits forms a bit string. For now, we interpret the string as a number. 0 and 1 are symbols which can represent different values in different systems. In circuit hardware logic-0 is typically implemented with a transistor circuit holding its output at 0 [v] In circuit hardware logic-1 is typically implemented with a transistor circuit holding its output at a positive 5 [v] Some higher-speed, low voltage systems operate with logic-1 at 3. 3[v], or 1. 8[v]
