Binary decoder

[havoc17]

So i am working with a 0804 chip (8 bit binary output) and i only have a basic knowledge of TTL. I need to output this on 7-segment displays 0-255. The only decoder i have really worked with is the 7447, 7448. I know enough to know that you cant use a BCD decoder for binary or you get the lovely odd symbols for 10-15. The only idea i have is for a binary to BCD decoder of some sort then use the 7447. but is there any way i can get this to work for 3 displays(0-255). Any help would be great.

 

[kchriste]

Take a look at this thread:
https://www.electro-tech-online.com/threads/binary-to-bcd-converter.38418/
Or use an ADC that outputs the data already BCD encoded for 7 segment displays:
https://www.electro-tech-online.com/custompdfs/2008/04/7106.pdf

 

[havoc17]

do you know of any way that i could use the 74185 or the full adder to run 3 displays instead of 2?

 

[kchriste]

The info is in the datasheet for the 74185.
https://www.datasheets.org.uk/pdf/455378.pdf
Below is an excerpt from the datasheet. You would need 3 74185s