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Just a computer rookie. Thanks for your enlightenment.


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?
Aug
23
comment Meaning of “expansion bus” or “peripheral bus”
internal and external do refer to the computer case. Same Wikipedia link for peripherals "Usually, the word peripheral is used to refer to a device external to the computer case, but the devices located inside the computer case are also technically peripherals. Devices that exist outside the computer case are called external peripherals, or auxiliary components. Devices that are inside the case such as internal hard drives or CD-ROM drives are also peripherals in technical terms and are called internal peripherals, but may not be recognized as peripherals by laypeople."
Aug
23
comment Meaning of “expansion bus” or “peripheral bus”
@avirk: Thanks, your suggestion is a good one.
Aug
22
comment What to do with a new external HDD in order to be used under Ubuntu?
If I want to use it under both Ubuntu and Windows, which format shall I go, ext3 or ntfs?