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how to lit led's in ps2 key board.

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padma

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Sir,

I am doing a project in pic16f877a, with ps2 key board interface.In my project I need to toggle caps lock led, as a response of setting/resetting of caps lock button.But when I am transmitting the command having odd number of one's,[eg: 0x04 for caps lock] response from the keyboard is 0xfc.
As I am sending odd parity how it happens? can any one help me to trace out this problem?

Thanking you.
 

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