#### amin5659

##### Member level 3

i want to design a n bit decoder binary to 7 segment.

the problem that i faced is that i cant find the number of output lines.....

i mean for n=4 the the max number is 15 that need 7*2 output lines

and n=5,6 too.

but for n=7 the max number is 127 that have 3 number also needs 7*3 output line and....It continues to grow with a pattern.but i cant find out a formula for that....

please help me..

regards.