Ordering and billing system

摘要

Ordering and billing system, with at least one mobile input and output device (30) for receiving and billing ordered services, and a processor unit (12) which is connected to it, for storing and further processing data which are exchanged with the input and output device (30). The services to be billed are output as a bill by an output unit (14), which can be controlled by the processor unit (12). Each provided service is listed as an individual item with a unique identification on the bill. The input and output device (30) can select and combine each individual item on the bill to entries to be billed separately, and gives the entry price to be paid. Each item is cancelled after it is selected for the first time. A test function tests whether all items have been cancelled, and the result of the test is indicated by a generated signal.