Hi, I was wondering how I should go about counting with more than one 7 segment display. So far I have made one 7 segment display work using a 7447 and a mod 16 7493. Ive also have a 7490 mod 10 I am considering using. I am aiming to get 4 digits to count to 0000-9999, but I'd like to start with 00-99 to get the concept.

 

You cannot use 7493 since this is a 4-bit binary counter.

You can use four 7490 to create an asynchronous (ripple) counter

OR

you can use four 74160 to create a synchronous counter.

 

You might want to use a 74143, 74144 or CD40110 which are decade counters with a decoder that can directly drive 7-segment displays.

 

I like to using CD4553 and CD4543, it can be reach to 6 digits.
If only need four digits then it can be using CD4553*1,CD4543*1, and CD4518*1,CD4511*1.
(MC14553B,MC14543B) 3 Digit BCD Counter -- to see the page 7.

 

So i got a 99 counter to work today in lab. I used 2, 7490s and 2 7447 connected to a single package display with 2 digits (basically just 2 7 segment displays). The clock of LSD was wired to the divide by 10 pin of the next digit (i think it was pin 12 or 10). So now i have to see if continuing this was will get me to my 0000-9999 mark.