tO uSE tHE pIC16F84 fOR aCCESS a dISPLAY lCD

        fOR eXAMPLE, tO sEND a 5AH tO dISPLAY:

        8 BITS
        ------

        cLEAR r/W
        sET rS
        wRITE 5AH tO D0-D7
        E hIGH, E lOW

        4 BITS
        ------

        cLEAR R/W
        sET RS
        wRITE 5 tO D4-D7      ; xA
        E hIGH, E lOW
        wRITE 0A tO D4-D7     ; 5x
        E HIGH, E lOW

        mIGUEL aLEXANDRE wISINTAINER