# Fibonacci circuit help

#### Uyet123

Joined Jan 25, 2015
29
HI, I am doing an ASM for a fibonacci sequence, but I am getting this error from logisim. Can someone help me fix this, I have been trying to for hours already but no success.

#### WBahn

Joined Mar 31, 2012
28,149
Could you describe your design and how you are attempting to solve the problem?

#### Uyet123

Joined Jan 25, 2015
29
Nevermind, I got it working. I have to display the digits on a 7 segment display, I am thinking of using binary to bcd, but how do I start on it? Do I make a state table first?

#### WBahn

Joined Mar 31, 2012
28,149
Binary to BCD can be done combinatorially.

#### crutschow

Joined Mar 14, 2008
31,491
Binary to BCD can be done combinatorially.
But that can require a lot of logic.
Here's a discussion on other approaches for binary to BCD.

#### LimOn Khan

Joined Apr 6, 2016
3
Can You please describe where the start, reset, stop point going? Which circuit is it?

Joined Dec 27, 2015
8
HI, I am doing an ASM for a fibonacci sequence, but I am getting this error from logisim. Can someone help me fix this, I have been trying to for hours already but no success.View attachment 82935
hey, can you explain me how you did the circuit? or send me what you did? that will help alot

#### MrAl

Joined Jun 17, 2014
9,757
Hi,

How many digits do you have to show?
If it is a small amount then logic works ok, but if you need like 6 digits probably do it in code. There's an algorithm on the web called something like "double dabble" which i have used several times and it doesnt take up a huge amount of memory space.
Example: