... RequirementsMemoryOver 1GOperate SystemWindows 7Network Card10/100 Ethernet Card or AboveTouch screen features: Optional size: 32'', 42'',46'', 52'' 55 ... '' 65'' etcTouch screen:infared touchscreen or optical touch screen.* Resolution: 4096*4096,32767*32767 zaxis256 grade* ... , gas stations, toll stations, bookstores, parks, exhibition hall. interactive public service billboard screen