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06/10/02 09:47
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 		 #24197 - Multiplexed Display/Key
Hi,
I have made RPM meter using 89c51,having 4 multiplexed 7seg dis. Scanning is done by T0 interupt TSR.
Now i want to interface 4 keys to scan lines of display,keys comman point to one port pin. I am not able to write its algorithm, How to sence 4 keys? shall i write "debounce code" & all other stuff in TSR of T0.
can anyone guide me.

Regards


List of 5 messages in thread
TopicAuthorDate
Multiplexed Display/Key            01/01/70 00:00      
RE: Multiplexed Display/Key            01/01/70 00:00      
RE: Multiplexed Display/Key            01/01/70 00:00      
RE: Multiplexed Display/Key Peter            01/01/70 00:00      
RE: Multiplexed Display/Key Peter            01/01/70 00:00      

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