Computer Science 1011A/B Lecture Notes - Lecture 2: Binary Number
17 Sep 2018
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Document Summary
The decimal system uses the base 10 of numbers. Right now we are going to look at base 2: just two symbols (0 and 1) we call this binary. We have a symbol representing a quantity -in this case by two numbers. Binary numbers: one (1) and zero (0) two states. --because of our fingers, our first counting tool. A computer only knows on and off the computer really only has two fingers. It can only use what it has available -which is a two state system so to understand computers, we must understand the system it uses (binary) We understand on with a one(1) and off with a zero(0) With this you can decode any binary number (up to 255^8]) decimal into binary. 30 then use 30 to continue this pattern until final binary: 01111110(binary) = 126(decimal) ex. *part of assignment one is putting decimal into binary also will be an exam question.
