第六篇: I majored in electrical engineering four years ago and have since been interested in the computer science. After college I got a job as an electronic engineer. My job has brought me into close contact with the computer and as a result my interest in it has kept growing all the time. A computer is after all a man-made machine; therefore, its effectiveness depends upon man's ingenuity. So long as we can program it using mathematical models, it can do almost anything we want. Of course, the capabilities of a computer depend upon its size---whether it is a microcomputer, a minicomputer, or a large computer. We can't use a microcomputer in complicated digital processing or sonar signal processing. If we do that, the time it spends in such processing would be longer than we expect. On the other hand, if we use a large computer to do only a small job ordinarily assigned to a personal computer, the cost would be very high.