Click the rectangles to set a digit on or off (1 or 0). The number at the right tells you what it would equal in decimal or base-10.
NOT created by me, but I've uploaded here as a valuable resource to people learning about programming and how computers work. Created by Moti Ben-Ari, Scratch Programs for Computer Science Unplugged, Copyright 2010 This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/
