Information-Technology Related Question Answers

26. In which decade were the first successful diode and triode vacuum tubes invented?





27. In which decade was the telegraph invented?





28. In which decade was the transistor invented?





29. In which decade was the SPICE simulator introduced?





30. In which decade was the Internet first implemented?





31. In which decade with the first transatlantic radio broadcast occur?





32. In which decade was the ARRL founded?





33. In which decade was the first solid state integrated circuit demonstrated?





34. Most modern TV's draw power even if turned off. The circuit the power is used in does what function?





35. Which is a type of Electrically-Erasable Programmable Read-Only Memory?





36. '.MPG' extension refers usually to what kind of file?





37. Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?





38. Who developed Yahoo?





39. Made from a variety of materials, such as carbon, which inhibits the flow of current...?





40. The most common format for a home video recorder is VHS. VHS stands for...?





41. What does VVVF stand for?





42. What frequency range is the High Frequency band?





43. The first step to getting output from a laser is to excite an active medium. What is this process called?





44. What is the relationship between resistivity r and conductivity s?





45. Which motor is NOT suitable for use as a DC machine?





46. A given signal's second harmonic is twice the given signal's __________ frequency...?





47. In which year was MIDI(Musical Instrument Digital Interface) introduced?





48. What does the term PLC stand for?





49. When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?





50. '.INI' extension refers usually to what kind of file?





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