How to create a product inventory in a cafe and a small store?

Question

Electronic accounting

I am asking for help in organizing the accounting of goods.
There is a roadside cafe and a small shop next to it with the following tasks:
1) With what program (without the Internet) can I create an inventory of goods with support for a barcode scanner? 
2) How to organize a network between objects with one common local database (to control the consumption of goods)?
3) What kind of equipment is needed for such tasks?
4) Is it possible to do without 1s (need a simple accounting without a cash register, if possible)? 

Answer 1

1c will be cheaper, throw Wi-Fi

Answer 2

Hello, I have two auto parts stores. At one time, I also thought about automating accounting and taxes, since there was no time for paperwork. I found the service https://dilovod.ua/ru/crm/ , which I use to this day. There you can combine several enterprises, which is very convenient. Try it.