具有下一张，上一张，旋转，放大，删除功能，可以从U盘等外部存储设备读取数据，具有LCD触摸屏，以上功能可以通过触摸屏实现。 -Has a lower one, on one, rotate, zoom, delete function, from the U disk and other external storage device to read data, with LCD touch screen, these functions can be achieved via the to