## Saturday, December 22, 2018

### Everything on Computers is based upon zeros and ones

That is why the code is binary rather than in a hexadecimal system like you learn in school. So, everything in numbers and letters has to be expressed in zeros and ones. If you want to convert a number here is a pattern of the decimal number on the left and a binary equivalent on the right. As you can see you need 4 places and a 1111 to express the decimal number 15 in binary
Decimal
pattern
Binary
number
00
11
210
311
4100
5101
6110
7111
81000
91001
101010
111011
121100
131101
141110
151111