 Welcome to ACMI Fun Facts. Does your house have mice? I'll bet it does. It's right on your desk, especially if you have a computer. That's right, I'm talking about computer mice, but let's talk about something a little less cheesy. After much development and prototypes, the mouse was first introduced in the public in 1968. It was a little different than the ones you're familiar with today, in so much as it was mechanical with a rubber ball spring and switches inside. It worked well, but subject to wear and tear only worked on certain surfaces. Enter the optical mouse, the kind of mouse that you'll use today. It works with a tiny camera that takes lots of pictures every second, about 1500, to be exact. And the mouse has a red LED that bounces light into a sensor. The images are then analyzed and the changes between the images correlate how far the mouse will actually move by comparing the differences in these images. There are many other types of mice like these ones here and these ones here, but let's keep the furry ones out of the house. This has been your ACMI Fun Fact.