Computer Animation

Before computers, animators had to hand draw every single picture, and then record them with a camera. The resulting film looked like a moving picture when played back. 

Now these images are called frames. And a frame is simply an image of a frozen moment in time. We also use frames in computer animation. Because they're the smallest visible unit of time in the animation. 

The traditional method of animating is time consuming,but hand drawing gives you precise control over every frame in your animation. The advent of computers introduced a faster way to animate with the computer generating each frame for us.

Instead of drawing every frame, you create objects in an animation program, and animate them using computer assisted tools. This is faster because once you've created a character in the computer, you don't have to redraw it every frame. And because the computer does a lot of the work for you,complex animations are much easier to create.