Electronic device, sales data processing system, and computer-readable recording medium

A sales data processing system comprising a sales data processing apparatus and an electronic device communicably connected to each other, the sales data processing apparatus including a display unit and an operation unit, the display unit being arranged at a fixed position on the sales data processing apparatus, and the electronic device including a display operation unit in which a display function and an operation function are integrated together,

• wherein:
• the electronic device includes a processor configured to execute, when communication connection is made with the sales data processing apparatus, control processing of substituting at least one of the display unit and the operation unit for at least part of a function of the display operation unit,
• in the control processing, when substituting said at least one of the display unit and the operation unit of the sales data processing apparatus for said at least part of the function of the display operation unit, the processor is configured to control the display operation unit to display a second display screen instead of the first display screen;
• the second display screen includes the plurality of display elements displayed in the first display screen, except for at least one display element from among the plurality of display elements which is used to implement said at least part of the function of the display operation unit for which said at least one of the display unit and the operation unit of the sales data processing apparatus is substituted, said at least one display element being omitted from the plurality of display elements displayed in the second display screen on the display operation unit;
• in the control processing, the processor performs control such that said at least part of the function of the display operation unit is instead implemented by said at least one of the display unit and the operation unit arranged on the sales data processing apparatus;
• and
• in the control processing, the processor is configured to determine whether the display unit, which is arranged at the fixed position on the sales data processing apparatus, is arranged on a right side or a left side of the sales data processing apparatus, and to display the plurality of display elements in the second display screen in a layout selected based on a result of the determination, the layout differing depending on the result of the determination.

A non-transitory computer-readable recording medium having a program stored thereon that is executable by a computer included in a sales data processing system including a display operation unit in which a display function and an operation function are integrated together, and a communication unit configured to make communication connection with a sales data processing apparatus in which a display unit and an operation unit are arranged, the display unit being arranged at a fixed position on the sales data processing apparatus, the program being executable by the computer to control the computer to perform functions comprising:

• controlling the display operation unit to display a first display screen including a plurality of display elements,
• when communication connection is made with the sales data processing apparatus by the communication unit, executing control processing of substituting at least one of the display unit and the operation unit for at least part of a function of the display operation unit,
• wherein:
• in the control processing, when substituting said at least one of the display unit and the operation unit of the sales data processing apparatus for said at least part of the function of the display operation unit, the program causes the computer to control the display operation unit to display a second display screen instead of the first display screen;
• the second display screen includes the plurality of display elements displayed in the first display screen, except for at least one display element from among the plurality of display elements which is used to implement said at least part of the function of the display operation unit for which said at least one of the display unit and the operation unit of the sales data processing apparatus is substituted, said at least one display element being omitted from the plurality of display elements displayed in the second display screen on the display operation unit;
• in the control processing, the program causes the computer to perform control such that said at least part of the function of the display operation unit is instead implemented by said at least one of the display unit and the operation unit arranged on the sales data processing apparatus;
• and
• in the control processing, the program causes the computer to determine whether the display unit, which is arranged at the fixed position on the sales data processing apparatus, is arranged on a right side or a left side of the sales data processing apparatus, and to display the plurality of display elements in the second display screen in a layout selected based on a result of the determination, the layout differing depending on the result of the determination.