Computers are all around us, but what really makes a computer, a computer? Explore the history of computers and the features they all share. [5:09]

We use computers every day! But what ARE computers and how do they work? Puppet Topher meets his friend Ulka, a computer programmer, who explains to kids how computers work. [6:59]

According to Bill Gates, computers have the potential to do amazing things, but the only thing that makes a computer smart is you! Learn about the relationship between software and the hardware it controls on computers. This the last...