How can I convert 4 or 8 bit binary to being displayed in a 7 part (lcd ect) display. And should I convert binary into BCD (binary coded decimal) before doing so.

I was thinking would the process of beginning with 8 bit binary, performing arithmatic functions, converting to BCD then outputting as a 7 part display be suitable? This is for a calculator.

I guess I chose this because arithmatic would be easier with pure binary and outputting as a 7 part display would be easier with BCD.

If there are any sources that you think would help me, it would be appreciated.