Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Clearspring1-at-aol-dot-com> A small program (80KB) for 555 calculations is at: http://www.mitedu.freeserve.co.uk/Downloads/555_Timer.zip I haven't used this, but hope it helps... Regards, Michael Tandy > Hey, are any 555 calcs out there? executable or Java...