This is my first good calculator I have ever made. It adds numbers 0-10 to numbers 0-10. I started this back in 1.1, when the flatlands first came out. Then, it all was killed by a glitch in the redstone torches. I abandoned it for a while, but then came back, and it was all working again! I was so happy, I finished it. The display screen for this consists of 2 7 segment display screens, and it is a slower one. It will sometimes flash off then back on, but it still works.