Operating device and button assembly for computer numerical control machine

An operating device for a Computer Numerical Control (CNC) machine that comprises an operating panel, comprising:

• an operating portion mounted on the operating panel and comprising a rotary button and a confirm button;
• an encoder connected to the rotary button and the confirm button, and configured for generating corresponding position codes according to the positions of the buttons;
• a memory unit for storing a plurality of function menus corresponding to a plurality of operating instructions;
• a microprocessor connected between the encoder and the memory unit, and configured for receiving the position codes from the encoder and invoking the corresponding function menus from the memory unit;
• a display unit connected to the microprocessor, and configured for displaying the plurality of function menus;
• and
• a controller connected to the microprocessor, and configured for executing input instructions.