Quick computer science questions. Answer all 11-20 for positive rate.

11. Fact A person whose job it is to write programs for the level n virtual machine need not be aware of the underlying interpreters and translators T or F? The phrase "need not be aware of" implies the practice of abstraction. 12. Fact Hardware and software are logically equivalent T or F? For example, a computer architecture that does not have ALU support for floating-point operations can simulate the floating-point operations with software. 13. Fact Operating systems were originally designed to automate the computer operator's job T or F? System calls are a good example of that automation. 14. T or F? A microprogram and a machine language program are the same type of software 15. Fact Microprograms grew fat during the golden years of microprogramming (1960s and 1970s) They also tended to get slower and slower as they acquired more bulk. T or F? The "fatness" explains why the RISC machine architecture fell into disrepute. 16. T or F? Microprogramming is not used at all by today's modern machines 17. Fact "From the programmer's point of view, how an instruction is actually implemented is unimportant (except perhaps for its speed)." T or F? This quote is just another example of the ubiquity of abstraction in computing 18. T or F? Algorithms can be implemented in hardware or software. 19. Fact Babbage's difference engine could only run one algorithm because it was not a programmable machine, but T or F? Babbage's analytical engine was designed to be programmable 20. When a computer system's microprogramming for a particular machine language instruction is changed to fix a microprogramming error, what actually is changed? A: ALU B: control unit C: CPU registers D: the instruction's operation code E: microinstructions