the computer nowadays, computers are becoming more and more popular. computers can help different people in different ways. they can help children with lessons and homework, help students and scholars do calculations, analyze data and present the latest achievements. furthermore, they can assist engineers and experts in the design of a mold, a bridge or a spaceship. besides, computers can offer fun and entertainment to us with the internet games, movies, and etc. indeed, computers have become a good companion of man.