OSBC - Binary Number System Lesson

Binary Number System

Computers do not process information like humans.  Once data is input into a computer, the data is converted to binary code.  Computers use switches to pass around electrical signals in binary code.  The binary number system has two digits. Those digits include the numbers 0 and 1. Zero (0) represents off and one (1) represents on.  When we count, we use the decimal system which consists of ten digits (0 - 9).  After we reach nine, we move to the left one place and use a 1 to represent the 10's place. In the binary number system, you run out of digits sooner.  To get to the next number, you must use the 0 as the placeholder and the 1 indicates one group of twos.  View the video below to learn more about the binary number system.

Watch the Binary Number System video below:

Decimal System

(Base 10)

Binary Number System

(Base 2)

0 0
1 1
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010

  

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