How does AT89C51 sends the output to external devices

[Mokshazna]

Hey guys I am working on bidirectional visitor counter and I am new to 8051. I made the  cpde and blueprint and it worked perfectly fine on  proteus but on hardware my c51 is not sending any data to it and I connected my ground and Vcc. PIN 31 which is EA is also given +5V. Crystal Oscilator was connected. My 16*2 LCD just glows but doesn't show any thing Can anyone please help me?

[GANEEV SINGH]

Hi Mokshazna

Make sure you have connected a pot. to VEE pin of LCD. You may also GND this pin for the highest contrast. Another reason could be that your C51 is not working properly or the code has not been burned properly; maybe due to some connection mistakes or so. To check this thing, try burning a simple code which deals with a LED (blinking or something similar) and check this out on your hardware. Try some sort of debugging techniques for this problem, you will surely find the solution.

Good luck  

[Ashutosh Bhatt]

if as you said everything is working in proteus

the problem is in your hardware connections. check each and everything throughly

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