GRAD Engineering LLC
Hopefully you have 10 fingers! Our number system is based on this. Zero is a number! Each finger and thumb gets a value. We count like this:
Hide your thumbs. If we had eight fingers then the number system would be like this: Note there is no 8 or 9.
If we had sixteen fingers then we all would count like this:
Hex numbers 0 through F translate to 0 through 15 decimal.
0h=0d, 1h=1d,.........9h=9d, Ah=10d, Bh=11d,...Fh=15d
Hex numbers 10 is 16 decimal. (number2 X 16) + ( number1)=decimal
10h=16d, 11h=17d......20h=32d, 21h=33d, 30h=48d, 31h=49d
Hex numbers 100 is 256 decimal. (number3 X 256) + (number2 X 16) + ( number1)=decimal
To see this work go to Windows Calculator. START/PROGRAMS/ACCESSORIES/CALCULATOR
This is a simple calculator. Mouse button down on VIEW, move to SCIENTIFIC, mouse button up. Now you should see a much larger calculator. There are buttons Hex, Dec, Oct and Bin. Lets try a number. With DEC on, enter 123. Push HEX and see 7B, Push OCT and get 173 and then BIN and get 1111011.