Today we talked about the hexadecimal system. It resembles the binary code that we learned about previously. So here's how it works,

In the hexadecimal system the place value is by 16. For example, you would start at 1,16, 255. A computer can show 255 levels for the colors red, blue or green and therefore by using the numbers 1 and 16 you can show all the 255 colours that a computer has. So since the computer can show 255 levels for the colors blue,green or red, you only use the place values 1 and 16 because 266 is one more than 255.

Another thing is since the numbers can go just up until 9 before having a place value added, you can use letters instead of numbers. The letters would be like this,

A= 10
B= 11
C=12
D=13
E=14
F=15

There are 255 different combinations for the three colours using only the 1&16 numbers and the six letters above.