21. |
Who co-founded Hotmail in 1996 and then sold the company to Microsoft? |
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22. |
The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...? |
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23. |
In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about...? |
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24. |
In the United States the television broadcast standard is...? |
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25. |
Which consists of two plates separated by a dielectric and can store a charge? |
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