I've got 5 electronic science problems. Can anybody help me? ...please?
Can you help? Even if you can't answer all of them, could you help out with the ones you know? I really need some help. Thanks! =)
1. Explain how a diode changes AC to DC.
2. Using the terms input, output, processing, and memory, explain how you use a pocket calculator to add numbers.
3. How is an electronic device different from a machine that uses electrical energy?
4. Explain the advantages that transistors have over vacuum tubes.
5. A friend asks you why vintage radios are so large. How do you explain the size?
OK, I'll take a shot at the other 3.
2. Using the terms input, output, processing, and memory, explain how you use a pocket calculator to add numbers.
You input the data by pressing the keys, you input the numbers that you want to add, with the plus sign between them, then you press the equal sign. The calculator retrieves the values from memory, processes them and outputs the sum.
3. How is an electronic device different from a machine that uses electrical energy?
A machine that uses electrical energy is like a lamp or a motor. It uses the electricity to perform a simple function, or do work. An electronic device typically uses electricity to convert electricity to information and to process it.
5. A friend asks you why vintage radios are so large. How do you explain the size?
Vacuum tubes, which were the predecessors of transistors, typically were four to six inches tall and an inch to an inch and a half in diameter. They also required transformers to supply direct current at the correct voltage. A typical radio would hav six to eight vacuum tubes.Tubes also would generate heat as a byproduct, and it was necessary to leave room to ventilate the heat. Radios were also considered furniture, since a family would sit around the radio listening to it, and the larger size was a status symbol.
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