Hi,
I have constructed a voltmeter using the single slope ADC method. The output I get is a number of clock cycles. I can display this number using a series of LED displays (TIL311), along with some counters(7490) and register(HCT574).
What I would like to do is display this number in scientific notation where I have two LED's displaying the first two significant figures, and another LED displaying the order of magnitude. I believe that I can get the order of magnitude by doing a series of divide by ten counters... but I can quite get the details right. But I am completely clueless on how to display the leading two digits (and not zeros if the number is low).
Any ideas? Thanks!
I have constructed a voltmeter using the single slope ADC method. The output I get is a number of clock cycles. I can display this number using a series of LED displays (TIL311), along with some counters(7490) and register(HCT574).
What I would like to do is display this number in scientific notation where I have two LED's displaying the first two significant figures, and another LED displaying the order of magnitude. I believe that I can get the order of magnitude by doing a series of divide by ten counters... but I can quite get the details right. But I am completely clueless on how to display the leading two digits (and not zeros if the number is low).
Any ideas? Thanks!