yeah i get what your'e saying. i do have a pic, however i want to make it completely analog with a digital output i supose. i want it analog because it leaves room for a more simple and reliable program. at the moment my bot has 3 IR sensors (front, left and right) so in my program my bot simply goes forward and tests to see wich sensors are triggered. the sensor being either a "1" or a "0".
although if i make it digital i supose i could just make it stop every few seconds and run a "sonar routine" so to speak. im just typing what im thinking at this point. but it would be a great learning experience if i made it completely analog.
by the way thanx for the link birdman, i understand the digital concept, and its benifits alot better now.