Computer and its main components.

  Define a computer and its main components. 2. What are five generations of computer hardware? 3. Computers derive their power from three factors. What are these three factors? 4. What are three basic computer operations? 5. List two examples of input, output, and memory devices. 6. What are four classes of computers? 7. What is the difference between application software and system software? 8. What are four key principles of OOP?