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Computer Hardware
Computer hardware is a general term used to refer to all the physical parts of a computer. Internal hardware devices include hard drives and motherboards, while external hardware devices include monitors, mice, keyboards, and printers.
11,849 Questions
What is a PDU power device used for?
Power distribution unit typically composed of transformers and circuit breakers. They are used in computer data centers, in stage shows. Some PDUs provide remote access.
What is the easiest or best way to transfer files from a PC to a Mac without a CD burner?
Install Linux with netatalk on the PC. Now you can network the two.
AnswerSimple: get a crossover cable and make sure your PC has a network adapter and hook the two comptuers together. as long as your MAC has the latest OS you should see the mac in the network neighborhood(in windows 95 - ME) or mynetwork places(if you have windows 2000 or windows xp) try googling this you should find tons of information on it. Answerthough you can do both, the best solution is just to buy a external CD burner, they don't cost much, and instead of researching or trying to install and syncronize the 2, it would be worth your while to buy a CD burner >>MWK<< AnswerUSB drive (thumb drive, pin drive). + They're small, cheap, and easy to use. Just plug it in, open a window for the drive, drag&drop or copy&paste, eject it, take it out, put it in the other computer, and put the files where you want them.
Why is an input mask used for data entry?
An input mask is a way to enforce the use of a common pattern in data entry. It is used to prevent people from entering wrong or inconsistent data in a database field.
Phone numbers for example can always conform to the following format
+
In Microsoft Access the use of this pattern could be enforced by applying an input mask to this phone number field.
This input mask would prevent phone numbers like 5552937884 or 760293893.
A phone number like +31 71 783762829 would be allowed.
Input masks like these ensure the proper formatting of data. Properly formatted data gives you more options for selection, ordering and grouping. Phone numbers in an international format can be grouped and ordered by country code, for example. And you would be able to select phone number from a certain country and area. When you don't apply an input mask, such groupings and selections would not be possible, because there might be phone number with country and area codes and phone number without country and area codes.
What is Pixel shader of your video card?
Every computer have different pixel shader of the video card, but if you really want to know , you can go to http://www.systemrequirementslab.com/. This is a website for checking can your computer run some game, it is very useful.
Depending on your OS there are various ways to get to where you want to go. Try Tools, Folders Options, File Types in Windows Explorer. There you can 'associate' file types with a program. It appears that you have a program associated with the file type on your USB device...change the type to 'Opens with NONE'.
What are the specifications of a Compaq D330 desktop?
The D330 series covers several similar models. All have a Pentium 4 or Celeron processor between 2.4 and 2.6 GHz, and support a maximum of 4 GB of DDR SDRAM. The equipped hard drive appears to have been 40 GB on all models.
Can you recommend some websites that explain the differences between vcd and DVD?
Here are few links: www.eneabba.net/ayu/music/guide/06.vcd-dvd.htm www.karaokeinfo.co.uk/articles/article-31-1-5.asp www.sessionmusic.co.uk/articles/article-8-4-1.asp
What does a Cipher x5000 look like?
The front has a label on the bottom left that says TCC CipherX. There is a non-descript status board that has Power, Plain, Cipher, Remote, Battery, Parity, and Alarm on it. The rear has a DTE RS-232 port, a DCE RS-232 port, and a t prong cirular power port. This was maunfactured by Tech. Comm Corp from Concord Mass. Iterface x.25 and NSA 1027 Mode. If you need a picture email me at emodx at yahoo dot com.
If you use an external drive to rip a CD into the computer does it affect the sound quality?
No. Only difference between an external and an internal drive is well, one's on the outside and the other is on the inside. That's about it. the mechanics of CD burners are the same regardless of location.
Where is the USB port located on the Dimension 2300 computer?
A u.s.b port is on the qweer gaylord 6000 harddrive needing recorvery from virgin statoins.
What are Schottky Barrier Diodes?
Good question, and one for us "older timers". First, let's talk about a "standard" silicon diode. These are fairly simple semiconductors with a single junction of P/N doped silicon. Sand if you will, with a little help... The Schottky diode is named after the inventor, Walter Schottky and is well known for having an extremely low forward voltage drop. Silicon junctions typically have a Vf (forward voltage) of about 0.63 volts at the point they begin to conduct current. This can easily rise up to 0.7 or even 1.0 Volts for large, high current diodes but this is mainly due to the Vf of the junction, plus resistive losses due to the high currents. But here, we'll focus on small signal diodes, those used for switching and low currents, in the hundredths of amps or 10mA. The Schottky junction is designed differently and uses a "Schottky barrier", or metal-to-semiconductor junction rather than the typical semi-to-semi conductor PN junction. The end result is a much lower Vf of around 0.15 up to 0.5V. This compares with the ubiquitous germanium diode with a Vf of 0.2V and because of it's low Vf, was very useful in the "diode radio" where a much lower RF power was needed to reach the conduction voltage and thus rectify an AM signal, and in combination with a high impedance headphone, allowed hearing radio stations, using no external power. Many people built their own and required winding antenna coils of hundreds of turns of tiny wire. However, Si-Si (silicon to silicon) junctions other than having a much higher Vf, also take much longer to block a reverse current after having been conducting a forward current. This is also called the recovery period and ranges in the 100's of microseconds which is fast, but slow when compared with modern switching power supplies (for example), which use frequencies into the hundreds of kHz and thus need to switch faster than a silicon diode can recover and block the current. Thus results in a large amount of power dissipation in the diode and makes the power supply less efficient. The Schottky diode, has the two important qualities needed in such uses: first, it's Vf is low reducing the power dissipation when conducting. Second, they're much faster at recovering and thus dissipate much less power during the recovery phase, when the diode is conducting "backwards". The physics involved are beyond the scope of this question, but to summarize: Schottky diodes differ from silicon diodes by using a different type of junction; a metal to Si or "barrier junction" and, have a lower Vf and faster recovery speed. They also cost a lot more than an ordinary diode, like a 1N4001 diode/rectifier. The term "rectifier" simply means a diode generally has enough current carrying ability to be used in a power supply to convert AC into DC. Finally, Schottky diodes, while having attractive capabilities, also have some significant limitations making them less usable in other applications. A main limitation is the Vr or reverse voltage rating, or the voltage that the diode can block without being forced to conduct, typically less than 50V and also "leaking" more current when blocking than an Si diode. Using an example of a 1N4001, it has a Vr rating of 50V, which is the lowest "grade". But also available are the same diodes, with better performance. The 1N4002 has a Vr of 100V, the 1N4003 200V, 1N4004 400V, going up to the 1N4007 with 1000V Vr. These voltages would totally destroy the Schottky diode's ability to block reverse current. But then too, the 1N400x diodes are much slower and cannot be used in high speed circuits like the Schottky diode can. Actually diodes conducts as soon as a current flow is possible and follow an exponential curve whereby eventually any more current flow will not appreciably increase the voltage drop. This empirical voltage drop can be assumed to be ~.7v or~.6v since the current flow will make a difference in voltage drop. This forward voltage drop can be assumed to be 6v to .7v or higher depends on current flow.
The success of the computer is due largely to its ability to expand and grow to meet the
changing needs and/or economics of its user in computer field buses are used for transferring information from one device or peripheral to another and it sends all your information from peripherals to the CPU. there are some common types of buses below
memory bus
CPU bus
Cache bus
local I/O bus
standard I/O bus etc.
Mirroring is the method it is used. This is commonly in the specifications of RAID1, RAID5, RAID10, RAID1+0, RAID15, and others. RAID is commonly used to designate RAID (Redundant Array of Independant Disks) setups, but RAID is not technically recognized as a specification, and not all RAID types and enumerations (such as 15) are even recognized as valid designations. RAID may also not involve data redundancy or mirroring at all, such as in Striping (RAID0, RAID2, RAID3, RAID1+0, etc.)
Which is important the motherboard or CPU?
Both are vital components of your computer without a motherboard their would be no possible way to run your computer since it like the "brain" of the computer. Without a CPU, your computer would not be able to process anything, it might not even start up.
Why won't my cursor move to the area I move to the mouse to sometimes?
maybe because the thing you have got loaded is not not responding therefore the mouse will not move there
Reports and user feedback
Where can you find information on Asus Motherboard Drivers?
Asus Motherboard Drivers are one of the top products from the Asus company. Information about this product can be found on the company's website and through Amazon.
What are the seven categories of computer?
Based on the size and use, computers can be categorized into seven types. They are embedded computers, super computers, main frame computers, servers, game consoles, mobile computers and personal computers.
Make sure your password is absolutely unpredictable. One only succeeds at guessing your password if you use commonly known information such as important dates like your birthday, names of friends, relatives, pets, etc., your job or favorites of any kind. These are the kinds of things that anyone who knows you might eventually guess.
Then, change your password frequently, but not on a set schedule. Do not write your password down anywhere and do not share it with anyone.
DMA, or Direct Memory Access, is a subcontroller that can access memory in sequential order without intervention from the processor. DMA is used to moving around large amounts of data in the computer without taking time away from the processor.
The first major uses of DMA included drive controllers and sound cards. Hard drives do not access single bytes of data, but instead an entire "sector" (512 bytes at once). They place this data in a buffer, which then is transferred to system memory. If the CPU had to read each byte and place it in memory, it would waste time that it could be performing other operations.
Similarly, sound had to be attended to constantly or it would "stutter" or have "clicks". To make sure that sound ran smoothly, developers would set up a memory to port DMA transfer, and the controller would smoothly feed the sound data into the sound card without requiring the programmer to constantly swap between drawing pixels and playing music or sound effects.
DMA is still in use today, and we use it for video, audio, and hard drive data transfers, just as we did back then. The processor is free to perform other tasks while waiting for data to load, for sound to play, or while performing blits to the screen.
