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           APPLICATION #4 LCD & KEYPAD INTERFACE CIRCUIT  

This program uses both the KBD.C and LCD.C drivers to allow keypad entry and LCD display. All keys are echoed except that will clear the display. Either the kbd_getc or lcd_putc may be replaced with getc or putc to use just one device with the RS-232.
The following code, ex_lcdkb.c together with lcd.c and kbd.c demonstrate how to implement key pressed on the 4 x 3 keypad to be display on the 16 x 1 LCD Module and echoed on the RS-232 channel.

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