过去，针对零售商的店内技术包括传统的前端销售点（即收银机）、关联的收据打印机、扫描仪和显示器。
In the past, the in-store technology focus for retailers included the traditional front-end point of sale (that is, cash register), associated receipt printers, scanners, and displays.
POS 客户端通知他，表明他的收据将在第3台打印机上打印。
The POS client notifies him that his receipt will be printed at printer 3.
收据当场通过e - mail邮寄，或者，如果顾客要求，那么一个纸版的收据从展示台下的打印机中打印出来。
Receipts are e-mailed on the spot or, if the customer prefers, a paper version emerges from printers hidden underneath display tables.
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