Push 1 once...write down the sequence of bits returned...push 1 again, compare the sequence to before
then push 2 once, write down that sequence, etc.etc. and so on...
What do you get on the display for a single press of the number 1 on the keyboard, one press, one release of that single key...not the numeric keypad, but the number 1 above the Q?
What did you come up with? Anything?

Quote Originally Posted by iugmoh View Post
I found the barcode reader specifications after a period time of searching
here is the link
http://s176338940.onlinehome.fr/pdf/IDICOD/2xxx.pdf
my barcode reader model is SSR-2110
but the manual is in franch i don't understand that
Not going to read it, not going to attempt it, that's your job. Besides, I don't know french...