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Computers
This category includes questions and answers about computers and everything related to computers.
48,002 Questions
How To Find Cheap Desktop Computers?
Well, I Personally Would Go To Highstreet Computer Repair Centers, Some Of Them Repair Second Hand Computers And Re-Sell Them.
If You Dont Want To Buy A Second Hand Computer Then Go To Stores Like Best Buy, Comet, PC World, Currys. These Have A Lot Of Great Deals On Computers, Tablets, Laptops, Phones And More!
IF You Want To Buy From And Online Retailer Then Go To Amazon OR eBay. eBay Has People Selling New Computers And Second Hand Computers So Look Out For Some Great Deals, Amazon Has Buisnesses Selling New Computers, Laptops, Tablets, Phones & More, But Watch Out You Could Sometimes Get Caught Out On P&P So Allways Read The Postage Price, Postage Price Also Applys On eBay And Any Other Online Store So Watch Out Or You Could Be Bailed Out Of Cash With Postage And Packaging.
What is The first step to all good computer troubleshooting?
Computer troubleshooting is one of those things that is best learned from extensive personal experience with computers and computer problems. However, here are some techniques that can be helpful and certain common problems which you can easily identify: - If you're getting an error code, do an internet search on it. Someone else has almost always had the same problem and has gotten advice on it. - If a computer is crashing (blue screening, restarting, freezing) a helpful tool in finding what's causing it is the Event Viewer. In Windows XP you can access this by going to Start>Run and typing in "evntvwr" and in Vista you can find it by simply doing a search for Event Viewer. In here, you can browse the System and Application Logs looking for errors. Once you find ones that correspond with the crash times, you can generally find some useful error code or information that an internet search will bring up information on. - If the computer isn't turning on at all, it's probably hardware. Try removing different components to narrow it down to the problem. The only thing you really have to have plugged in to the motherboard is the power supply. You can disconnect the CPU, Hard Drives, CD/DVD/Floppy drives, and PCI Cards. Common problems are fried power supplies, bad motherboard (either fried or bad capacitors), and fried PCI cards. - If a computer is randomly restarting or crashing, check the motherboard capacitors. If they're bulging on top (not level) that may very well be the problem. - Malware is a common cause of a number of different problems. Good indications that malware is the problem are slowness, pop-ups (particularly ones about security and spyware/adware/etc.), and link redirection (do an internet search, click on a link, and you end up being brought to some other web page). Ultimately, there isn't a hard, fast set of rules for troubleshooting. It has alot to do with instinct and past experience but the more you do it, the better you'll get.
Sure ...why not? As long as you can afford it and make sure that your son/daughter doesn't become obsessed with texting/Facebook etc. And make some certain rules like for example, I'm eleven my self I have a smartphone and my parents make me do chores everyday, and I have to have only a's and b's at school, and have good behavior. So make like a contract it really does come in handy . Oh, and if u don't want them to get in any certain pages on the Internet, you can block them. And there's also a gps thing where you can always know where they are. So all that really does come in handy a lot as they get older, but remember its up to YOU and ur rules. And btw a lot of kids now a days have smartphones computers etc. So also if u decide for ur child to have one, make sure they don't use it during school or show it off because a lot of people do steal stuff . So make sure they use it at a proper time and take care of it. I'm guessing ur child is in middle school, so most of these things do occur. Hope I helped(: good luck:D
What is the formula for all surface areas?
- Curved Surface Area = 2πr2
- Total Surface Area= (2πr2) + (πr2) = 3πr2
What is the fifth generation of computer input and output devices?
The third generation of computer input and output devices was marked by an improvement in the tape-processing capabilities.
What are the main features of the Inspiron 9400 computer?
The Dell Dimension 8300 has large desktop drive storage, includes a 4x DVD writer as well as a prominent DVD ROM bay, and includes an awesome graphics package- for enhanced visuals and programming
How third party auditing will be done in cloud computing with out taking copy of data?
Business owners have an ethical and legal responsibility to maintain confidentiality and privacy for their customers. In addition, protecting proprietary information is a financial necessity to prevent competitors from siphoning valuable information about product design and production.
When data is stored in the cloud, especially in large volumes, it is burdensome to download the information periodically to ensure the data is intact and uncompromised. It is expensive and time consuming to dedicate staff to review every detail; therefore third-party auditing protocols are implemented to verify the data is secure and undamaged.
Features for third-party auditing protocol include:
- The ability to challenge the system to ensure changes are either not allowed or tracked for analysis.
- Data is protected from view by the third-party verifying the data.
- Data blocks can be verified for integrity.
To implement a third-party audit for cloud computing operations, the owner of the data must set up a private key and a public key. The private key allows total access to the data stored in the cloud. The public key allows access to certain blocks of data (primarily through tags or other qualifiers) that the independent verifier will use to test the security, integrity and vulnerability of the data stored. By initiating challenges to the system, the verifiers can detect modifications, corrupt files and deletions.
Ignoring security assessment in cloud computing environments is risky business. The federal government has established a certification process for cloud vendors called
to help improve the monitoring and security practices related to cloud storage. Protocols that actively search for vulnerabilities and engaging qualified, trustworthy third-party verifiers are intended to boost consumer confidence and protect privileges information from unauthorized access and corruption.
See the related link.
What is the MOST common way to cool a CPU?
The most popular method is by adding an aftermarket CPU cooler. These replace the stock cooler and are able to dissapate more heat. They usually have increased surface area to help move heat away, along with larger fans to push air over the cooler. These do fairly well for moderate overclocks and are the cheapest option.
The most popular enthusiast method is by liquid cooling. This is considerably more expensive, complicated and usually requires regular maintenance. This pushes a liquid coolant through a series of tubes which pulls heat away from the components. This then goes through a radiator which dissipates the heat much like the first method of cooling. A pump is used to push the coolant though the tubes and a reservoir or T-line allows coolant to be added and stored.
Other methods include submersion cooling, phase-change units, and TEC cooling.
The most extreme method is liquid nitrogen cooling which can reach temperatures in the negative hundreds. This is only used during competitions and is not suitable for regular computing as liquid nitrogen needs to be poured constantly into a pot over the CPU.
I believe liquid helium is also used to achieve even lower temperatures
Did Charles Babbage invent the Eniac?
No,because the inventor of ENIAC is John Presper Eckert Jr. and John Mauchly.
How can one recycle a broken computer?
Computers can be recycled anywhere they are sold.
There has been issue with e-waste (electronic waste) being exported to developing countries that can not properly handle it.
A good company in the United States to recycle your computer is All Green Electronics Recycling. They offer free service and have over 100 drop-off locations and do free pick-ups all across the country. Check out www.allgreenrecycling.com or call (800)780-0347
Define constant linear velocity and explain how it applies to CD standards?
Constant angular velocity of a rotating disk means that, given a stationary base reference line and a zero line on the disk, both extending from the center of rotation to the outside edge of the disk, the periodic change in angle between the two lines remains a constant. Such a disk will have constant angular velocity (CAV) if its rate of rotation or revolutions per minute (RPM) remains constant.
While it would be technically possible to have the linear velocity of the disk remain constant by gradually decreasing the speed of rotation as the player head moves across the disk (because the outer paths are longer than the inner ones), this would make things more complicated both for the recording and playback machines, and therefore more expensive.
The paths of information on a CD (or DVD) are analogous to the grooves on an LP recording. The recording and playback heads move across the disk (CD or LP) as it rotates. Actually, of course, there is only one spiral path or groove; on an LP, it goes from the outside edge toward the center; on a CD/DVD, it goes in the opposite direction. In deciding on the parameters for the LP and CD, engineers had to involve the amount of data to be recorded and the spacing required to record that data versus the size of the disk, the speed of rotation, the data capacity of the disk material, and the sensitivity of both the recording and playback heads. ---- The above answer defines Constant Angular Velocity (CAV), not Constant Linear Velocity. The following is the definition to Constant Linear Velocity (CLV): "Constant Linear Velocity (CLV) is a CD-ROM (Compact Disc - Read Only Memory) format in which the spacing of data is consistent on the CD, but the speed of the disc varies on whether the data being read is near the cent or the edge of the disc." During CLV, in order to create the effect of constant speed as the CD turns, the CD drive uses a mechanism that slows down the disc when the laser beam is near the center of the disc, and speeds up the disc when the laser beam is near the outer edge. Thus, the beam is over a sector for the same amount of time, no matter where the sector is.
Do you think Computers have brains like humans?
No, Computers operate on an "Input-Output" function. You input a command, the computer processes it, and then displays the result on the screen. Although the computer can do a lot of things, it can't do anything if we don't tell it to.
How can you play sound from your computer on skype?
Be smarter than the microphone. You click on the microphone button at the top left corner and it should be on. But it depends if you are using a laptop or desktop computer. If you are using a desktop computer there is no microphone. But if using a laptop, click on the microphone button on the top left corner. Then the microphone should turn on.
What symbols are used for computer programming?
You hold down alt and on you're keypad while holding down alt you can type alot of things using the numbers
http://knopok.net/symbol-codes/alt-codes
That should explain it better but num lock has to be on also before you do anything.
Where might one go to find free remote access?
You can get remote access to any computer with many new software programs available over the internet, and many are free. If that doesn't work for you, you can contact a professional and they can show you how.
What applications do you need to keep on your computer?
Never delete anything from the WINDOWS folder in 'my computer'. This folder holds everything important that the computer need to run such as program files. The most important folder in WINDOWS is "System 32", never delete it.
What are the importance of computer in the bank?
1. Account Management
o In banking, activities start with banks automating customer accounts, which allows personnel to create, update and maintain customer records. Banking hardware and software have enhanced the accuracy of accounts that tellers and other banking personnel process. Banking software performs customer transactions through a centralized data record system. Account management is the genesis and backbone of all banking information systems.
Hardware Technology
o In the 1960s, bank hardware consisted of a mainframe and a punch card machine. Punch cards contained customer account information and were read into the main system by a punch card machine. Midrange and client/server hardware configurations, which are no larger than a minitower system, can run an entire bank in addition to receiving transactions from affiliated bank branches. These new hardware technologies can process more transactions than legacy banking hardware systems. Hardware technologies have enabled advances into wireless banking and telecommunications banking.
Electronic Transactions
o Banking systems must perform electronic transactions. Direct deposit is an example of an electronic transaction. Computers processing electronic transactions must have hardware and software encryption capabilities to keep data from being compromised during a transmission. After the computer performs electronic transmissions, it transfer the information to the main computer system for processing and updating. Banks have extended electronic transaction capabilities through landline and cell phones, the internet and ATMs.
Which tool can you use to verify that a network port on a computer is good?
A network multimeter will test cables, ports and network adapters and a loopback plug can work on ports provided by a computer, wall jack, patch panel, switch, router, or a other device that is turned on. Pg 505 A+ Guide to Hardware, 6th edition.
Why have computers got smaller?
Newer electronics devices introduced in each computer generation (and thereby defining the generation) are more compact and consume less power than the older electronic devices, enabling the size of both the computer's electronic hardware and cooling system to be reduced significantly.
Gross speed is raw speed. It is a calculation of exactly how fast you type with no error penalties.
Net speed takes accuracy into account. To calculate Net WPM, take your gross WPM result and subtract the amount of errors you left in per minute, also known as the error rate.
How do you play scribble nauts on the computer?
no i have been searching scribblenauts unlimited in 6hours!
Where can one purchase a notebook by the company eMachines?
The best place one can purchase a notebook by the company "eMachines" is the company's official website. Once the user selects their country of residence, the site will redirect the user to the company's online store. Amazon is another location that one can purchase products by eMachines.
A formula containing a relative cell address looks to different cells based on a relative position to the cell containing the formula. So, if you had a formula in cell B1 which included the information from relative cell address A1, that formula, when copied to another cell will always look for the information in the cell directly to it's left on the same row. Copy that formula to B2 and the formula will use the information from A2...copy the formula to T64 and the formula will use S64. A formula containing an absolute cell address will always look to the exact same cell regardless of where you copy the formula. So if the formula in B1 contained absolute cell address A1, that formula will always look to A1, whether you copy it to B2 or T64. You can also have an address which is part relative and part absolute - so a formula will always look to a specific row but different columns (if the row is absolute and the column is relative), or the same column but different rows (if the column is absolute and the row is relative). So, if you wanted to use information contained along row 2 of each column, but the formula might be on different rows in different columns, you could make the row absolute and the column relative. so the formula in A7 would use A2, the same formula in B6 would use B2, the same formula in C26 would use C2.
Name four computer peripherals?
- punchcard reader/punch
- 7 channel 1/2 inch magnetic tape drive
- 9 channel 1/2 inch magnetic tape drive
- fixed head magnetic disk drive
- movable head magnetic disk drive
- modem
- teletype
- CRT terminal
- etc.
