16f628 2*16 lcd sürme sorunu

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LVP_OFF  yapınca çalıştı
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LVP Configuration Bit sets RB4 functionality.

RB4/PGM RB4 TTL CMOS Bidirectional I/O port. Interrupt-on-pin change. Can be
software programmed for internal weak pull-up.
PGM ST — Low voltage programming input pin. When low voltage
programming is enabled, the interrupt-on-pin change
and weak pull-up resistor are disabled.