![]() Custom modifications are added as needed and these are also more portable than traditional POS terminals as they can be used with laptops, tablets any many other compatible devices.As far as computers are concerned, off the shelf versions such as Tally.ERP 9 were usually newer and hence more powerful than proprietary POS terminals.The availability of local data storage, processing power, networking, and graphical user interface made it possible to develop flexible and highly functional POS systems.A wide range of POS applications have been developed on various platforms in built into the machines called proprietary POS Terminals.The button on the machine would calculate the bill, including sales tax for almost all jurisdictions when the customer was getting ready to pay By click of a button on the hardware machine, a second or third order could be worked on while the first transaction was in progress. ![]() It used numeric keys and a button for every menu item.Which displayed entire order for a customer.Micro processors controlled cash register systems This system was the first commercial use of client-server technology, peer to peer communications, and local area network (LAN) simultaneous backup and remote initialization Early electronic cash registers (ECR) were controlled with proprietary software and were limited in function and communication capability
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