Electronic Calculator in a Virtual World

Here is the video of the 'Little Big Planet' calculator we were discussing in Week 1. He first shows us how it is used in 'Play' mode, then switches to 'Edit' mode to expose all the switches, wires and pistons he used, so we can roughly see the amount of complexity that goes into creating this seemingly simple device.

The creator had this to say about his creation:

i have made an "electronic" 8bit calculator (not "mechanical" calculator) with the Beta demo of "Little big planet" (a new PS3 game with an editor for create).
it do decimal/binary conversions and it can do Add and Sub.
There are probably more simple solutions for calculator machine but i was more interested by this "electronic" solution for the fun

computation take clearly less that a half second
this calculator use:
- 610 magnetic switches
- 500 Wires
- 430 pistons
- 70 emitters
and others stuff...

Level called "Little Big Calculator"
my PSN is Upsilandre

Title: 'Little Big Computer'
Author: 'Upsilandre'
Game: Little Big Planet