The programmed switching point and parameters are displayed and set by keyboard request.
点的程控交换机和参数显示和键盘的要求设置。
At the same time, because the USB keyboard is a HID class device, when the driver is embedded into the operating system, the HID class driver ought to be programmed.
同时由于US B键盘是HID类设备，要把此驱动程序嵌入到操作系统中去，还需要编写HID类驱动程序。
At the same time, because the USB keyboard is a HID class device, when the driver is embedded into the operating system, the HID class driver ought to be programmed.
同时由于US B键盘是HID类设备，要把此驱动程序嵌入到操作系统中去，还需要编写HID类驱动程序。
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