LG LDC22720 - 7-2-8 KEY BUTTON INPUT & DISPLAY LIGHT-ON CIRCUIT

7-2-8 Key Button Input & Display Light-On Circuit
The circuit shown below determines whether a function control key on the operation display is pushed. It also tu rns on the
corresponding function indication LED (LED Module) SEVEN SEGMENT DISPLAY (SEVEN SEGMENT DISPLAY
MODULE). The drive type is the scan type
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