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. Thu, 04 Dec 2008 15:24:23 -0800 http://backend.userland.com/rss092 i have just started to learn micro C compiler----------i need some helpwe can define a pin in kiel vision easilysbit ab=P1^0;problem is that h i can i <noauthor@nospam.com> http://www.8051projects.net/forum-t10191.html you cant do that in micro C as i said.. i have not used MicroC yet.. but if you give me little time i can explain it in CCS compiler you can define Ajay<contact@nospam.com> http://www.8051projects.net/forum-t10191.html @nadeem malikthink you'll need bit masks for port bit-access.Like (P1 & 0x01) for P1.0(P2 & 0x08) for P2.3etc. sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t10191.html ANDing for clearing a bit and ORing for setting a bit is a common practice and applicable for every controller in world Ajay<contact@nospam.com> http://www.8051projects.net/forum-t10191.html You can do this in mikroC#define mypin PORTB.F4 Colin Mac<colinmac12@nospam.com> http://www.8051projects.net/forum-t10191.html