Point of sale Software

Hi,
Some body can tell me if I can use linux in my cash register machine (Toshiba A10)?!

I’m guessing YES, as this page:
http://www.eposworld.co.uk/toshiba-st-a10-integrated-touch-screen-terminal.html
states that redhat 7.2 is a “supported” OS

and if you google it (search term = Toshiba ST-A10 Linux):
http://www.google.co.uk/search?source=ig&hl=en&rlz=1G1GGLQ_ENUK368&q=Toshiba+ST-A10+Linux&btnG=Google+Search&aq=f&aqi=&aql=&oq=&gs_rfai=
you get a fair few returns, including pdf’s about a -

suse 9.3 driver pack.
SuSE9.3 Linux TTEC Driver Setup Guide for ST-A10.pdf

and the manual mentions suse 9.3 too
ST-A10_Manual.pdf

Then you would probably need to look into Linux point of sale software… this may be a good place to start:
Top 10 Point of Sale (POS) Software in Linux