Hi all
I created this frequency meter circuit on Multisim 14.1. How it basically works is that as high pulses come in from a source, the counters are incremented accordingly and the 555 timer is configured such that after every second, a high pulse is sent to the reset of each counter and then the entire display is reset to 0. For example if I have an input signal of 100 Hz frequency, this circuit will count from 0 to approx. 106 and then reset.
What I need is for the value of the display to remain even after the counters are reset (i.e. with an input frequency of 100 Hz, the display should remain at 100 +- 10Hz ). I know that I have to use a latch IC but the problem is I am not familiar with latches and how to connect them. I tried using a 4543 but I could not get it to work properly.
Any help would be appreciated.
Thank you
I created this frequency meter circuit on Multisim 14.1. How it basically works is that as high pulses come in from a source, the counters are incremented accordingly and the 555 timer is configured such that after every second, a high pulse is sent to the reset of each counter and then the entire display is reset to 0. For example if I have an input signal of 100 Hz frequency, this circuit will count from 0 to approx. 106 and then reset.
What I need is for the value of the display to remain even after the counters are reset (i.e. with an input frequency of 100 Hz, the display should remain at 100 +- 10Hz ). I know that I have to use a latch IC but the problem is I am not familiar with latches and how to connect them. I tried using a 4543 but I could not get it to work properly.
Any help would be appreciated.
Thank you