How can make a cash register products with labview?

need a cash register that only putting the product code to show me the product details such as price, product type, code, subtotal, etc..
I already have a prototype but I do not know how to do that prototype with a single command string or one string controlling how could it?

bro if that idea is the same as mine and put the code that code be all and end shopping and make a report but could implement this idea in the program and qeque several examples and books but all I want to put the codes from one control rod
Attachments:
CASH REGISTER.lvproj ‏2 KB

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