hi!!
i hv some problems with my project, about heart beat monitoring system..
here is my project's flow....
decade counter(7490) ---->binary to 7 seg decoder(7447A) --->7 seg display
my questions are,
1) how i'm going to make the counter to reset EVERY 60 seconds??? I plan to use 555 timer for my cct
2) how i'm going to make the alarm (buzzer) to activate when it over the limit..eg. i want to display the no. on 7 segmant below 100.... and if it display over 100, the alarm will activate...i want to know the connection..
can someone help me, maybe with the schematics and anything,,, PLEASE HELP ME...
ps: i. not using PIC coz i hv prob with the coding part
email:ieda_teruchan@yahoo.com