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Just a computer rookie. Thanks for your enlightenment.


Sep
4
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@barlop: I got some nice answers here electronics.stackexchange.com/questions/38989/…
Aug
28
comment Power adapter and power supply unit
Thanks! So power adapter is used for laptop but not for desktop, while power supply unit is for desktop but not for laptop? They don't co-exist, because that would be duplicate?
Aug
28
comment Power adapter and power supply unit
Thanks! What differences are between power adapter and power supply unit? Are they for different purposes? Do they co-exist?
Aug
28
comment Power adapter and power supply unit
Context: for computers' power supply.
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@RedGrittyBrick: Do you mean that although the computer is using DC directly from the power adapter on its power chord, some parts of the computer convert DC back to AC again, and the currents in Ethernet cables (and possibly in USB cables and internal buses) are not DC but AC?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
Isn't the electricity already DC because the power adapter is AC->DC converter?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@RedGrittyBrick: signals for data that is transmitted in theose cables are electricity currents, aren't they? So the frequency of signal and the frequency of the electricity current are the same concept?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
What is the difference between "signal frequency" and electricity frequency?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@barlop: What does "+" mean? Is it different from GND?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@barlop: in data wires of USB cables, and ethernet, all that are transmitted are electrical currents, right?
Aug
28
comment What are the frequencies of current in computers' external peripheral cables and internal buses?
@barlop: do you mean the currents in computers' external peripheral cables, such as Ethernet cable, USB cable, and in computers' internal buses are all DC, so their frequencies are all zero?
Aug
28
comment Is there other usage of Comcast extension cable and splitter?
@sidran32: Split one cable into two, so that two TVs can receive the same signal, or two internet modems can receive the same signal, or a TV and an internet modem behind the splitter can share the same incoming cable to the splitter?
Aug
27
comment Is there other usage of Comcast extension cable and splitter?
@sidran32: (1) I wonder how the splitter is used and what its purpose is? (2) Is there one input and two outputs, or the other way around? (3) Are the three inputs/outputs all coaxial cables? (4) Is the splitter an example of power splitter?
Aug
27
comment Is there other usage of Comcast extension cable and splitter?
@Zoredache: perhaps you could maintain a inventory list of what you already have?
Aug
27
comment Is there other usage of Comcast extension cable and splitter?
Thanks! Are they useful for computers and peripherals?
Aug
27
comment Is there other usage of Comcast extension cable and splitter?
Thanks! (1) There won't be a TV in my place. Does it mean the things are useless? (2) How much do they cost in stores that sell them?
Aug
27
comment Cannot connect to Google sites in Firefox
@w3d: Can I say your comment is a cunning plan to get me to stay with Firefox?
Aug
27
comment Cannot connect to Google sites in Firefox
@Synetech: I am not using a proxy. But I am not sure if it has something to do with that I open about 200 tabs already.
Aug
23
comment How is heat dissipated for current external HDDs?
Basically what you said is reducing heat generation. Do you know about heat dissipation? Thanks!
Aug
23
comment Meaning of “expansion bus” or “peripheral bus”
Is the bus between northbridge and graphical card slot, called "high-speed graphical bus (AGP or PCI express)" an internal or expansion bus?