barcode to spreadsheet including master spreadsheet

[dudelove00]

Hi All,
i am trying to set up a small system so i can scan a barcode from my android phone which then refers to a barcode master sheet (that i can replace at any time) to look up info and then puts that info ito a spreadsheet.
info would be as follows in colums:-
barcode, model, description, quantity to be ordered.

i just need it just to do orders.
i dont need it for warehouse management or anything else.

i have a master spreadsheet already of all items i sell to be used as a reference database.

any help would be grateful.

thanks in advanced. Dudelove00