Animation is the illusion of movement
Computers have evolved in the last century, the mobility and power of transferring data has fortunately developed along. Watch this very funny commercial by John Cleese comparing a computer with a dead fish, aiming to explain the computer’s compatibility.
Animation can be defined as an illusion of movement. Within filmmaking animation is probably the most creative. As computes evolve the ability to make more complex forms of animations is possible. Watch this two part video, which is an interesting overview on how computer animation has changed over the years:
You can watch Part 2 through this link