Quick computer science questions. Answer all 21-30 for positive rate.

21. T or F? As operating systems became larger and more sophisticated, machine language instructions were added to computer hardware to facilitate the use and development of the operating systems. 22. T or F? There is much more to the functionality of an operating system than can be "seen" from the application programmer's point of view. 23. T or F? A stimulus for the development of the electronic computer was its use as a tool for decryption of coded messages and its use as a tool for computing field artillery range tables during WWII 24. Fact Modern day computers still use the von Neumann architecture T or F? The von Neumann architecture is characterized by its "stored program" concept. 25. T or F? The early First Generation computers had relatively short word widths, relatively few CPU registers, and relatively small main memories. 26. Second Generation computers are characterized by A: vacuum tubes B: discrete transistors C: integrated circuits D: VLSI E: none of these 27. T or F? Supercomputers have been around since First Generation computers 28. A billionth of a second is also know as a A: milli B: micro C: nano D: pico E: femto second. 29. T or F? The first commercially successful use of the GUI interface was the Apple Macintosh computer. 30. T or F? It's correct to say that the iPhone and the iPad are prime examples of the Fifth Generation of computers