Abstract: A point-of-sale (POS) system with a display viewing angle adjustment device includes an adjustment device securely mounted on a rear cover of a display and pivotally connected with a support arm of a base. The adjustment device includes a support plate and a fixing plate securely mounted on the rear cover of the display. The support plate has two side legs, and the fixing plate has two slide slots for the side legs of the support plate to slidably mount through the slide slots, such that the support plate can be moved up and down and is mounted between the screen and the fixing plate. The side legs of the support plate are pivotally connected with the support arm of the base. Because of the support of the support plate and the slide slots of the fixing plate, the screen can be moved up and down to conveniently adjust a display viewing angle.

Abstract: A mounting assembly for a printer has an upper housing, a base cover mounted under the upper housing, and a connecting seat. A mounting chamber is defined between the base cover and the upper housing. The printer is mounted on the connecting seat and is mounted into the mounting chamber together with the connecting seat, such that the printer and the connecting seat are packaged by the upper housing and the base cover. The mounting assembly and the printer can be mounted in an installation chamber of a cash register. As the printer and the cash register are assembled together as an integral unit, the printer can be stored easily and space occupied by the printer and the cash register is greatly reduced.