8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes : Forum / topic http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T21:56:00-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t724.html 2009-01-07T21:56:00-08:00 Pullups are must.. there is no problem in using P0. all ports are same, the only difference is.. that.. P0 need pullups. you can use any pin you want and consider it as a normal port. Re: http://www.8051projects.net/forum-t724.html 2009-01-07T21:56:00-08:00 SGH Thanks Rickey.Regards,SGH