Research and design of touch screen panel technology based on S3C44B0

Touch Screen Panel(TSP) is easy,convenient and natural.TSP has Become popular in public as a kind of new computer I/O equipment.Basing on introduction to TSP technology,the article introduces particularly four line resistance TSP control circuit based on ARM chip S3C44B0 and correlative driver.The TSP can get a location of screen through successive approximation A/D converter,and finally get the result with the method of average.