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You are here: Home / Replies / Hi Nicolai,Ya, that might be

Hi Nicolai,Ya, that might be

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Microcontroller › 8051 › 4×4 keypad with 8255 › Hi Nicolai,Ya, that might be

June 28, 2013 at 4:08 am #10046
AJISH ALFRED
Participant

Hi Nicolai,

Ya, that might be due to the absence of pullup/pulldown resistors. Could you please post your circuit also. Also tell me whether you are checking for a high value or low value to detect a key pressed. 

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