I am working on a lie detecting and right now im working on a pulse beat monitor. I would like to display the beats per minute on a dual 7 segment display. right now im using a 74161 counter and a 4511 7 seg decoder. my problem is that right now it counts up to 15. is there a way i can get it to count and hold beats per minute or will i need an 8 bit counter? another thing is getting it to hold a certain value how could this be done? right now im just counting a clock from a 555 timer but it just resets and starts all over again. Any one with help it would be appreciated!