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Computers
This category includes questions and answers about computers and everything related to computers.
48,002 Questions
What are the negatives of computers?
The original computers were huge. They took up several rooms and did only a fraction of what today's computers do. They very expensive, stayed hot, and used lots of electricity. Every minute they were used was costly, and companies had to keep close logs of their use.
What are some online virtual worlds for kids?
I personally like Chobots.com. It says it's a family game but I can't picture my mom on chobots. Lol! And here are some other good ones:
-Poptropica (can't chat but, very fun!)
-Buildabearville (a furry friend purchase needed)
-Fantage
-Panfu (teaches Spanish)
-Toostville (8-5)
-ClubPenguin
-Webkinz (webkinz needed)
And there is a new one being made called Sorbzworld.com, and some more are planetcazmo.com and Travels of Wilgington and Wenks. Hope I helped! =D
What is changing data before or after it is entered into a computer?
why automatic type data when type through keyboard in computer
How do you change my product key on my laptop?
Here's How:
Click on Start and then Run.
In the text box in the Run window, type regedit and click OK. This will open the Registry Editorprogram.
Locate the HKEY_LOCAL_MACHINE folder under My Computer and click on the (+) sign next the folder name to expand the folder.
Continue to expand folders until you reach the HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents registry key.
Click on the WPAEvents folder.
In the results that appear in the window on the right, locate OOBETimer.
Right-click on the OOBETimer entry and choose Modifyfrom the resulting menu.
Change at least one digit in the Value data text box and click OK. This will deactivate Windows XP.
Feel free to close Registry Editor at this point.
Click on Start and then Run.
In the text box in the Run window, type the following command and click OK.
\system32\oobe\msoobe.exe /a
When the Let's activate Windows window appears, choose Yes, I want to telephone a customer service representative to activate Windows and then click Next.
Click the Change Product Key button at the bottom of the window.
Don't worry about filling anything out on this screen.
Type your new, valid Windows XP product key in the New key:text boxes and then click the Update button.
You should now reactivate Windows XP by following the instructions on the Activate Windows by phone window which you should now be seeing or via the Internet by clicking the Back button and following the instructions on that screen.
If you'd rather postpone activating Windows XP until a later date, you can click the Remind me later button.
After activating Windows XP, you can verify that activation was successful by repeating steps 9 and 10 above.
The Windows Product Activation window that appears should say "Windows is already activated. Click OK to exit."
Winkeyfinder is an excellent alternative solution to changing the Windows XP product key code manually.
The major difference between a calculator and a computer is?
This is so silly. A calculator is something that gives you answers to a math question (ex. 2+2=4), and a computer has the internet, a software to type, and games. Everything a calculator doesn't have.
Your external hard drive appears on your computer all right but you cannot access it?
I would try to connect the device to another computer to make sure its not just your computer. If both computers cannot see the data there is most likely damage to the FAT (file allocation table) and/or boot record or the transport hardware in the external enclosure is going bad. If you can physically remove the harddrive from the enclosure and directly connect to a motherboard, that may be another alternative. If all this fails, you may have to contact a data recovery company or try recovering data with a freeware data recovery program (or buy one)
What is the normal salary of computer enginner?
It depends on the region, function, and so on of the position. In the majority of the United States of America, a computer engineer with a degree can command around $75,000 a year.
Why do computer have hard disk?
Hard Disks (or hard drives) are mainly used for Primary Storage. Typically most of the data on the computer, and the operating system, are stored on the harddrive. Without a hard drive or similar long-term storage, you would have to store data in RAM. RAM is volatile (temporary) memory which clears when the computer is turned off. Whereas hard drives will store data reliably without power, provided the hard drive and computer are functioning correctly.
Hard drives may also be utilized as overflow space if the computer runs out of RAM. Which harddrives are much slower (typically 50-100 MB/s) than RAM (1,600-8,000 MB/s) it is also far, far larger. Most harddrives are from 80 GB to 2,500 GB these days. This allows virtually limitless space for RAM to overflow to, and allow the system to keep functioning in the event of a RAM shortage. Computers typically only have 4 to 32 GB of RAM.
What are the similarities and differences between a system call and a procedure call?
System Call is a method used by a process to request action by the operating system. A function is a subroutine and mostly part of a user program which may or may not return a value to the calling function.
Definition from the National Electrical Code Article 100:
Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply and the final branch-circuit overcurrent device.
Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
How many wires are there in a USB cable?
a usb cable has four wires, two for power and two for communication.
Where can one purchase laptop speakers?
Dell speakers can be purchased from many online companies, such as Dell, Amazon, and Ebay. If one prefers to visit a brick and mortar store, the speakers are also available at Best Buy and other computer stores.
What is the price range for a Dell All in One desktop computer?
Acer desktop computers have a wide price range. One can be found for as cheap as ‘£182, but for this price an operating system will not be included. At the top end of the price range ‘£700 will get a desktop computer package including mouse keyboard and monitor, with a high spec processor, memory cache and many added software features and internet security subscriptions included in the price.
How to Buy the Best Laptop Computers Under 1000 Dollars?
If you are looking for the best laptop computers under 1000 dollars, you will probably find the search much easier than it was in the past. Since laptop technology has become more sophisticated, older models of these computers have experienced drastic price cuts. You can also look into the world of tablet computers for similar products.
Why does the computer slow down when more than one program is on?
A likely cause is that you have insufficient RAM. This means that your computer doesn't have enough simultaneous memory to run multiple or complicated programs. RAM memory only works when the computer is on and is used for storing short-term data while running programs.
Also, there could be another fault with the computer that is causing the slowness which is undetectable from this location.
What is the difference between 8 bit and 16 bit ina computer?
the number of bits describing the architecture of a CPU system define its maximum "word size", or how many bits it can process at one time. In an 8-bit system, a standard integer can hold a value of up to +127, and an unsigned integer can hold a value up to +255. In a 16-bit system, unsigned integers can hold values up to 2^16 - 1, or 65,535.
When speaking of 8-bit and 16-bit color, for 8-bit color you can either mean the palette size (256 colors, each of which can be assigned any color) where only 256 unique colors can be used at a time. The other meaning of 8-bit color is a different 256-color system (called 8-bit truecolor) where you define the color by attributing 3 bits to red, 3 to green, and 2 to blue. This system is less effective than the 8-bit palette system.
16-bit color (also called high-color or 16-bit truecolor) allows a total of 65,536 unique colors to be displayed, anywhere on screen at any time, by assigning 5 bits to the red and blue channels, and 6 bits to the green channel (our eyes are more sensitive to green).
What are the four main task that the computer performs?
- fetching instructions from memory
- decoding instructions
- storing instructions and data in memory
- executing instructions that manipulate data
- executing instructions that change the next instruction that will be fetched and/or evaluate conditions
- executing instructions that transfer data in to or out from the computer
- etc.
What is the difference in a jump drive and a flash drive?
They both mean the same. Actually a flash drive also called as a pen drive is an USB device ( Universal serial bus).
This is called so because, the flash drives are attached with the computer at the USB port.
What are some useful computer programs?
You mean software,use this term when you search online.Softwares are Microsft live messenger,Skype and so on.Try to search free software for picture organizing for example.Read this on wikipedia http://en.wikipedia.org/wiki/Free_software
1)Computer can do only mathamatical work but human can do both phycial,Logical..
2)Human can think in different angle but computer does not
3)Memory capacity is high for computer but normal for human being
4)Human can use computer but cannot use man
5)Computer is Stupid machine for every work we have give commands ,but man to his own knowledge
6.) Computer cannot think of its own, but man does.
7.) Both are affected by viruses.
8.) Computer can calculate at higher speeds than man.
9.) Memory is limited for computer, but for man it is unlimited (but recollecting is difficult!)
10.) Computer can do monotonous work without getting tired, but man seldom loves to do that.
Why Charles Babbage is regarded as the father of modern computer?
Charles Babbage was a 19th century mathematician and inventor whose calculating machines earned him a top spot in the history of mechanical computing. Babbage's early career was devoted to practical applied science, particularly in manufacturing. But he is most famous for his work on what he called the Difference Engine and, later, the Analytical Engine. As early as 1822 he speculated that a machine could be used to compute complex mathematical problems and calculate and correct errors in logarithm tables and astronomical charts.
