Encoders designed for human interface applications are often available with a pushbutton feature incorporated into the shaft. After the cursor is moved to the desired menu item, the operator pushes the shaft to “enter” that choice. This is similar to the “clicking” function on a mouse. In this example the operator chooses menu item “F” and “drills down" to an additional submenu.
 
                 
                 
                 
 
 
 
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                                 Hong Kong, China
Hong Kong, China