machine at a store where cash is stored and sales transactions are made
A cash register (also called a till) is a mechanical or electronic device for calculating and recording sales transactions, and an attached
cash drawer for storing
currency. The cash register also usually prints a
receipt for the customer.In most cases the drawer can be opened only after a sale, except when using a special
key, which only senior personnel or the owner has. This reduces the risk of personnel
stealing from the shop owner by not recording a sale and pocketing the money, in the case that the customer does not require a receipt and has to be given change (cash is more easily checked against recorded sales than
inventory). In fact, cash registers were first invented for the purpose of eliminating employee theft or
embezzlement. The first registers were entirely mechanical, without receipts. The employee was required to ring up every transaction on the register, and when the total key was pushed, the drawer opened and a bell would ring, alerting the manager to a sale taking place. Those original machines were nothing but simple adding machines. Some cash registers include a key labeled "NS" (most of the time silver in color), which is abbreviated for "No Sale", and opens the drawer, printing out a receipt stating "No Sale" and recording it in the register log that the register was opened. Some other cash registers require a numeric password to be entered when attempting to open the register. In the event of a power shortage, some models have latches that can be pulled to open the drawer.
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