problem with i/o pic16F876

[mikmac]

Just like that! I was looking many places but not
on right terms. I did not get it without your help.
When I did it, it has worked absolutely fine.

-> pullup MCRL with a 10K resistor pin 1

Many thanks, Aratti

[malc-c]

Just goes to show you can't always trust simulators.

Golden rules:
1) - Place a 0.1uF capacitor across the Vcc and Vdd lines as close to the PIC as you can. If the PIC has 2 sets of supply pins use a capacitor across each set of pins
2) - Use a pull up resistor between MCLR and +ve.
3) - Tie all inputs to either +ve or GND via pull up or pull down resistors - typically 1K - 10K - Not advisable to leave inputs floating