Domino Computer ドミノで1+1をしました！

1. Domino Computer
LOUPE Study #16
Suzuki Yuka

2. What’s a domino computer ?

3. What’s a domino computer ?
http://youtu.be/OpLU__bhu2w

4. How do make
a domino computer ?

5. How do make?
• Using logic circuits.(OR, XOR, AND)
http://www.think-maths.co.uk/downloads/domino-computer-worksheets
• an electrical circuit → a domino circuit
• Let’s computing 1+1 !

6. OR
point : one or the other or bothInput
A
Input
B
Output
A OR B
0 0 0
0 1 1
1 0 1
1 1 1
Domino OR

7. XOR
Input
A
Input
B
Output
A XOR B
0 0 0
0 1 1
1 0 1
1 1 0
point : one or the other not both
Domino XOR

8. AND
Input
A
Input
B
Output
A AND B
0 0 0
0 1 0
1 0 0
1 1 1
point : one or the other not both
Domino AND

9. Let’s computing 1+1 !
Input
A
Input
B
Output
A(2)
Output
B(1)
0 0 0 0
0 1 0 1
1 0 0 1
1 1 1 0
• build a half adder

10. Let’s computing 1+1 !
↑failed…

11. Let’s addition !
Input
A
Input
B
Input
C
Output
A(2)
Output
B(1)
0 0 0 0 0
0 0 1 0 1
0 1 0 0 1
0 1 1 1 0
1 0 0 0 1
1 0 1 1 0
1 1 0 1 0
1 1 1 1 1
• build a full adder

12. Problem
• too slow !
• too big !
• too costly !

13. Good point is …
We can’t see an electric current.
but…
We can see a dominotic current !