1. Explain each of the following terms in your own words: a. Translator. b. Interpreter. c. Virtual machine. 2. Briefly describe the von Neumann's architecture and list the advantages of this architecture. 3. What is Moore's law and explain in detail what the trends show about the past and present of CPU performance. 4. In what sense are hardware and software equivalent? In what sense are they not equivalent? 5. Consider a computer with identical interpreters at levels 1, 2, and 3. It takes an interpreter n instructions to fetch, examine, and execute one instruction. A level-1 instruction takes k nanoseconds to execute. How long does it take for an instruction at levels 2, 3, and 4