Adobe Photoshop

Well in our last class before the weekend we learned about the hexadecimal system..it similar to the bianry code or the tens sytem..We use 16's here instead of 10's and 2's. With the 1 and 16 you can show the 255 different kinds of colours..that the computer can show.
As for the binary we use numbers and multiply by two.. it would be like: 1,2,4,8,16,32,64. Hexadecimal system we use 16. it would be 1,16,266 etc...
Since our computer screens produce 255 levels of colour red,gree,blue. 1,16 is used since 266 is one more than 255. Numbers can go upto 9 we use letters.
So in that case
A= 10
B=11
C=12
D=13
E=14
F=15
There are 255 different color combinations for the three colors only using two numbers and 6 letters.
Its the same as the binary as u decode binary you find out the kinds of colour in this case..