a controls all units of the pc 1 by executing a program stored in the rom 11 b or the memory 14 a program or data executed by the cpu 11 a stored in the rom 11 b the ram 11 c is used as a main memory for the cpu 11 a to execute various processing the display unit 12 includes a display such as a liquid crystal display and a display driving circuit for driving the display the operation unit 13 includes a substantially transparent touch panel covering a display surface of the display device and a control circuit for controlling the touch panel further the operation unit 13 may include an interface to which an input device such as a keyboard or a mouse is connected the memory 14 is a device for memorizing various programs and data using a hard disc or a nonvolatile memory such as a flash memory the memory 14 memories an os 21 a win32 application 22 a wpf windows registered trademark presentation foundation application 23 for a desktop style a wpf application 24 for a metro style a gdi printer driver 25 an xps printer driver 26 and a driver managing program 27 hereinafter windows u00ae 8 of microsoft corporation will be described as the.