Dear all, Y v r Using ,source impedence and load impedence ,wats the need of dividing the voltage..... is that to transmitt the current generated without distortion across the transmission lines to load...... In The Concept Rise Time and Fall Time...Is The Concept Like..V R Sending the input signal input clock pulse which ultimately should reach output without distortion...I Think The First Pulse reach First After Some Delay Second Pulse Reaches at the Output....the delay is 10 to 90 percent of input clock pulse i guess....is that concept right!!!! Kindly Reply I need to Understand the Concept ,Strengthen my Foundation!!!! Regards Deepak ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu