| 摘要 |
PROBLEM TO BE SOLVED: To provide a merchandise sales data processing apparatus for achieving the optimal viewing angle of a display screen corresponding to a processing state, and for preventing the peep of secret information while highly maintaining operability, and to provide a control program of the merchandise sales data processing apparatus.SOLUTION: The merchandise sales data processing apparatus is provided with a viewing angle setting means for setting the viewing angle of an arbitrary region on the display screen of an operator side display unit 2 or a guest side display unit 3, to either the first viewing angle or the second viewing angle narrower than the first viewing angle. Then, the viewing angle setting means is operated according to the processing state of the merchandise sales data processing apparatus 1, the viewing angle of the display region of secret information on the display screen of the operator side display unit 2 or the guest side display unit 3 is set to the second viewing angle, and the viewing angle of the other region is set to the first viewing angle. |
