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 This work is licensed under a Creative Commons Attribution-Noncommercial 2.5 India License.Rickey's World Disclaimer Ajay Bhargav - contact@nospam.com contact@nospam.com Mon, 01 Dec 2008 23:08:13 -0800 Mon, 01 Dec 2008 23:08:13 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php http://www.8051projects.net/forum-t9424.html
also even if its FFFFFFh by default then why we have to write 1's in order to configure it as input port??
please help
]]> Fri, 09 May 2008 16:38:18 -0700 http://www.8051projects.net/forum-t9424.html http://www.8051projects.net/forum-t9424.html
For more information on why its like this.. open 8051 User manual (from Intel) and see the internal construction of I/o ports. you will find latches and buffer there for reading and writing to port. Just read and look at the construction diagram you will get your answer yourself. If you still feel any problem understanding it then, I will explain it ]]> Ajay<contact@nospam.com> Fri, 09 May 2008 17:44:27 -0700 http://www.8051projects.net/forum-t9424.html