1. While the architectural details may vary from computer to computer, virtually all modern computers have the same basic layout, known as the von Neumann architecture. Describe this layout and the role each of the major components plays in performing computations. 2. One of the sample computer systems described in the text included a 2.2 GHz Intel Celeron 450 CPU. What does the 2.2 GHz refer to when describing this CPU? Is it always the case that a CPU with a bigger number (e.g., 3.2 GHz) will result in the faster execution of programs? Justify your answer.