LCD in 4 bit mode with PIC16F877

When you are using LCD in 4 bit mode you have to send data two times where in 8 bit mode you only have to write once, this ultimately keeps your microcontroller more busy with LCD. If you are doing only a few things with your microcontroller then its ok you will not have to face the problem of overhead, but this becomes critical when you are doing many tasks same time.

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