NOTE: Very slow please wait for it. I'm happy for input if i have done wrong.
I'm not sure how to explain the full details about it.
Note the most left buttons starting from the top are: 1,2,4,8,16 (FIRST DIGIT)
The buttons below and to the right are : 1,2,4,8,16 (SECOND DIGIT)
F S
Eg. 8 - 1 = 7
The button close to the center is a input brrow
You can have any of them on and you will get the hex value displayed on the right side.
