We all know that hard drives are mechanical products, vibration can be said is a large sworn enemy of the hard drive, hard drive internal structure is very sophisticated, head height of only a few microns away from the thousands per minute rpm disc surface, once the strong vibration will appear to read and write exception even cause the disc or head of physical damage, the consequences are quite serious.
The hard disk read and write are forbidden to move: the hard drive in case that does notwork in fact, be able to afford the collision, otherwise the drive could not be transported all over the world. But hard work, can withstand the vibration is very Read more
What is virtual memory, and how to set virtual memory?
The concept of virtual memory to physical memory when the system's physical memory space to make ends meet, the operating system on your hard drive to open up a disk space as memory usage, this part of hard disk space is called virtual memory. Win386.swp file in the form of Windows 98 and Windows 2000/XP form to manage the virtual memory page file pagefile.sys.
First, the size
1. In general
Under normal circumstances, it is recommended to let Windows manage virtual memory to automatically assign it according to the actual memory usage, dynamically adjusts the size of virtual memory. Read more
How to Create a Bootable Rescue USB Disk
Quick Heal is a popular antivirus program that has a boot disk aspect for restarting and scanning infected or damaged computers. To make the CD boot on a USB drive is not very tricky.
1.Start Quick Heal and click on "Tools," then "Emergency CD."
2.Select "Operating System Installation CD," then click "Next."
3.Insert your USB drive in a USB port. Read more
Three methods to improve the performance of the NTFS file system
One of the advantages of the use of NTFS partition as a folder to set different permissions, so that distribution according to need, so that security is improved, and higher performance in order to allow the windows to NTFS file system, we have the necessary NTFS the file system have the necessary optimization.
1.Turn off access time scale.
We open the NTFS partition as a file attribute, file creation time, modification time and last access time can be seen in the "General" tab. If the file number of the sub-region and multi-directory structure, so each time you access or modify the time scale information will be updated. We can modify the registry to prohibit update of the operation.
Run "regedit" to open the Registry Editor, then locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem, double-click the right side of Ntfsdisablelastassessupdate ,set its value to" 1 ".
2. Prohibit the 8.3 name format.
In the earliest days of Windows operating system, especially among the DOS system, the file name has been taken to the 8.3 format. Windows XP NTFS partition, do not have this limitation. However, we switch to the command prompt window, you will find the file name of the Lord than 8 characters will be replaced by the ~ symbol. We can be found in the registry above key NtfsDisable8dot3NameCreation, its value is set to 1, so that you can prohibit the Windows XP NTFS partition applications 8.3 format.
3.Optimize the Master File Table.
Master file table to save the index information file on disk, with the increasing number of hardware file, master file table storage space will grow inevitably debris. In this regard, we also can modify the registry to increase the storage space in order to avoid frag mentation.
Open the Registry, find the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem, double-click the NtfsMftzonereservation Dword key and set its value to 3 or 4.
This address is http://www.computerites.com/computer-skills/2012/04/three-methods-to-improve-the-performance-of-the-ntfs-file-system-472.html
What is virtual memory and how to set virtual memory
The concept of virtual memory to physical memory when the system's physical memory space to make ends meet, the operating system on your hard drive to open up a disk space as memory usage, this part of hard disk space is called virtual memory.Win386.swp file in the form of Windows 98 and Windows 2000/XP form to manage the virtual memory page file pagefile.sys.
First, the size
1. In general
Under normal circumstances, it is recommended to let Windows manage virtual memory to automatically assign it according to the actual memory usage, dynamically adjusts the size of virtual memory. Read more
Dust caused by the motherboard does not recognize hard drive
A friend's computer is often unable to start, and occasionally into the system is also frequent crashes, preliminary judgment computer there is a problem caused by a virus or hard drive itself. Prepare in accordance with the first soft, hard, simplest to most complex maintenance principles to come up with the latest Kaspersky antivirus software on the hard drive killing, but using the boot disk into DOS mode, but the prompt can not find the drives, it appears that the virus is unable to carried out.
Restart the computer and into the motherboard BIOS, hard disk parameters inappropriate, but the automatic detection does not recognize the hard drive. Only seems to check the hardware, open the case, unplug the hard drive power cord and data cable is Read more
AHCI (Serial the ATA the Advanced Host Controller Interface),in Intel's guidance, by the number of companies R & D interface standard, which allows the storage driver to enable advanced Serial ATA features such as Native Command Queuing and hot plug, its R & D team members include Intel, AMD, Dell, Marvell, Maxtor, Microsoft, Red Hat, Seagate and StorageGear famous enterprises.
The AHCI essence is a PCI class device to play the role of a common interface (ie, it is common to different operating systems and hardware), in between the internal logic of the system memory bus and Serial ATA devices. This device class describes the general system memory structure with control and status area, the command sequence entry table; each command table entry contains the SATA device programming information, and a point (used in the device and host transfer data) that describes the table pointer.
computer skill:Remember the five points, Increase your hard disk life.
1. Do not suddenly turn off the power when your hard disk working.
When the hard disk working, generally in high-speed rotation, if we suddenly turn off the power, may lead to a violent head and the disc friction and damage to the hard disk, so to avoid the sudden shutdown. Shutdown must pay attention to the hard disk light is still flashing on the panel, only in its light stops blinking, turn off the computer's power switch before the end of the hard disk read and write.
2.To prevent dust from entering. Read more
The relative success and cult-like popularity of Asus’ Eee cloud computer has helped raise the level of interest in what’s being called a new class of computers. Some call the new machines ultra-mobile PCs (UMPCs), others have labeled them Netbooks, and many are safely referring to them as handhelds. It’s hardly a surprise that the PC powerhouses — Intel, Microsoft, Hewlett-Packard, Dell and dozens of others — have gone running after this opportunity.
After using one of the so-called Netbooks, it has become obvious that they really need to go back to the drawing board and rethink how people are going to use these devices if they want to participate in the next big shift of computing. Read more
The Internet is another universe.
The Internet is designed for the scientific sharing, the network structure can prevent the point or multi-point destruction still work properly.
However, the Internet has gradually get rid of the control computer and communications experts have their own independent development, become another universe, another dimension.
In Google search results,there are a large number of Google + Content.If you are not a Google + heavy users, and even social aversion, then you certainly can not stand the Google search.
In fact, we have a way to let these Google + content to be displayed, such as the use of the outside of Google.com other local Google search, such as the use of non-English interface of Google.com, for example, do not log in to your Google account to search, for example, open the browser anonymous window to search. But if you have been accustomed to English interface on Google.com search for their own account, so there are ways. Read more
We all like a good success story, and we've had a lot of those this year. But we would be remiss not to mention some of tech's biggest flops. We don't want to indulge in too much Schadenfreude, but you've got to admit that the Qwikster saga was pretty funny.
There were some plain old duds this year, as well as some gross miscalculations. There were even a few serious transgressions. What follows is our list of the seven most spectacular tech failures of 2011.
7. Qwikster , Netflix
What was Netflix smoking when it tried to spin off its DVD business with the name Qwikster? We see a lot of dumb product names around here, but Qwikster definitely takes the cake this year.
It was terribly timed, too. Netflix had just separated its streaming and DVD pricing plans, raising rates for customers who had both, which drove a million customers away. The Qwikster saga added insult to injury. Read more
Why is my computer so slow?The Cause Of the Computer running slow and Solution
1.Too many boot items.
A lot of software, such as the PDF reader, player, input method, download the tools and software, obviously should only be when the user needs to open, quietly added to the startup items and system services, and did not tell the user. More installed software, the boot is more serious impact on boot speed, causing the slow boot. How should we do?
The solution:
Use Optimization software to optimize boot items. Unnecessary boot startup items off, you can also manually optimization: Start - Run, type msconfig, start point, in addition to anti-virus software and input method ctfmon starts, remove the need to start soon, the system a lot.
2.There are too much junk files.
Look at the page every day, run the software, or uninstall the software will have the junk files, browsing the web will produce a lot of cache files, download software, and also some residual configuration files, registry files. Over time, there will be more. Too many junk files your computer is running slow, sometimes several GB.
The solution: use computer optimization software, a key clean-up junk files, all the options on the hook. To a thorough cleanup. If several months have not cleaned up, you will find junk files, scary, a few GB.
3.Too many computer desktop shortcut icon.
Computer desktop shortcut icon is too much too much cause slow boot on the one hand, computer desktop shortcut icon, boot should be loaded out of the computer during the boot process to be completed. Your desktop, there are dozens of icons, hundreds of words can also be optimized under.
The solution: Do not save a lot of files on your computer desktop, put on the desktop is not safe, put the other disk go to save, not shortcut keys can be removed.
4.C disk is full, no space.
C drive is full, no space to some extent, also contributed to the slow boot speed.
Many people like to watch TV, watch online software, these software are watching while downloading, the download file is saved in C drive, then the C disk space will be getting smaller and smaller, finally leaving dozens of MB, a few hundred MB. C drive of the reserved storage space is gone. Many programs running and loading, all require a certain amount of temporary space.
Many of the C drive partition space is already small, a lot of software installed. Download preservation district in the C drive, coupled with the accumulation of junk files, the C disk space is getting smaller and smaller.
The solution: to drive C thin. Uninstall unnecessary software, clean up junk files, download files stored on the C drive to the deletion of deleted, the removal of the removal.
5.The aging computer hardware.
Many computer age, the aging computer hardware. It can only be upgrading.
6.The computer infected with the computer virus.
This situation is generally less. Few computer viruses boot start. Load virus driver files. Run the program execution. Kill the virus frequently.
This address is http://www.computerites.com/computer-skills/2012/03/why-is-my-computer-so-slow-the-cause-of-the-computer-running-slow-and-solution-457.html
the Solution of MMC can not open the SQL Server Enterprise Manager.MSC
MMC can not open the file C:\Program Files\Microsoft SQL Server\80\Tools\BINN\SQL Server Enterprise Manager.MSC.
This may be because the file does not exist, is not an MMC console, or a later version of MMC to create. May also be because you do not have sufficient permissions to access this file.
Answer
To see on your hard drive the file, if it gets to another partition, see if you can open: Read more
error solution of MYSQL Based the ERROR 1130: Host is not allowed to connect to this MySQL server
ERROR 1130: Host 'XXXXXX' is not allowed to connect to this MySQL server.
The two solutions of this problem:
Method One:
Execute the command:
Read more
1.The noise of the chassis.
Fault phenomenon: to upgrade the CPU, the computer every time you turn noise particularly large. But after a while, the voice returned to normal.
Fault Analysis and Processing: First check whether the CPU fan fix bad chassis work and structure of some low-quality, easily in the boot of work caused by resonance, increased noise, in addition to the CPU fan and chassis fan motor add a little oil to try. If it is, it is best to replace the chassis because the chassis of the box single book.
2.The temperature rising too quickly.
Fault phenomenon: a computer running when the CPU temperature rose quickly, boot and only a few minutes the temperature rose from 88 ° F to 124 ° F and when 128 ° F to stabilize, no longer rising. Read more
Common classification of computer viruses:
1.Of the parasitic way into the boot-type computer virus file virus and compound-type virus
The boot virus is parasitic in the disk boot sector or master boot sector computer virus. The virus system boot, the Lord does not guide the contents of the area to the correctness of the shortcomings of discrimination in the process that led system into the system memory-resident monitoring system is running standby transmission and destruction. Can be subdivided in accordance with the location of boot virus parasitic on the hard disk master boot record viruses and partition boot record virus. The master boot record virus infected hard disk master boot sector, such as cannabis virus 2708 virus, torch virus, etc.; active partition boot record, partition boot record virus infected hard disk, such as small ball viruses, Girl, virus.
ENIAC was the world's first computer.The ENIAC contained 17,468 vacuum tubes, along with 10,000 capacitors, 70,000 resistors,1,500 relays, 6,000 manual switches and 5 million soldered joints. It covered 1800 square feet (167 square meters) of floor space, weighed 30 tons, consumed 160 kilowatts of electrical power. There was even a rumor that when turned on the ENIAC caused the city of Philadelphia to experience brownouts, however, this was first reported incorrectly by the Philadelphia Bulletin in 1946 and since then has become an urban myth.
Several Ways to Generate a Random Password Using PHP
Using PHP to develop applications, especially web application is often necessary to generate a random password to generate a random password, such as user registration, user reset the password to generate a random password. Random password is a string of fixed-length string, I collected several methods to generate a random string for your reference.
Way 1:
1. In 33 - 126 to generate a random integer, such as 35.
2. 35 will be converted into the corresponding ASCII characters, such as 35 corresponding to #. Read more
The U.S. government's Los Alamos National Laboratory, scientists conducted a computer simulation. In the simulation, they launch a 1 trillion-ton bomb, bombardment of a flying giant asteroid of the Earth, with a powerful explosive power to destroy the asteroid, and thus save the planet.
Los Alamos National Laboratory is located in New Mexico, part of the U.S. Department of Energy. In this laboratory, the scientists used a super computer simulation of a nuclear bomb bombardment of asteroids, in order to understand the effectiveness of this approach. The simulated asteroid is 1650 feet long (about 500 meters), to use nuclear bombs to reach a trillion-ton is about 50 times that of the United States during World War II atomic bombing of Nagasaki, Japan. Read more
The complete error codes in ADSL connection service part 2
ADSL Error Code - Description
700 The expanded command in the device .INF file is too long.
701 The device moved to a BPS rate not supported by the COM driver.
702 Device response received when none expected.
703 ERROR INTERACTIVE MODE
704 ERROR BAD CALLBACK NUMBER
705 ERROR INVALID AUTH STATE
706 ERROR WRITING INITBPS
707 X.25 diagnostic indication.
708 The account has expired.
709 Error changing password on domain.
710 Serial overrun errors were detected while communicating with your modem.
711 RasMan initialization failure. Check the event log.
712 Biplex port is initializing. Wait a few seconds and redial.
713 No active ISDN lines are available.
714 Not enough ISDN channels are available to make the call.
715 Too many errors occurred because of poor phone line quality.
716 The Remote Access IP configuration is unusable. Read more
The complete error codes in ADSL connection service part 1
ADSL Error Code - Description
600 An operation is pending.
601 The port handle is invalid.
602 The port is already open.
603 Caller‘s buffer is too small.
604 Wrong information specified.
605 Cannot set port information.
606 The port is not connected.
607 The event is invalid.
608 The device does not exist.
609 The device type does not exist.
610 The buffer is invalid.
611 The route is not available.
612 The route is not allocated.
613 Invalid compression specified.
614 Out of buffers.
615 The port was not found.
616 An asynchronous request is pending.
617 The port or device is already disconnecting.
618 The port is not open.
619 The port is disconnected.
620 There are no endpoints. Read more
Problem of Installing Microsoft Lifecam Cinema
When you are installing the Microsoft LifeCam softwares, and then you plug in the LifeCam Cinema hardware, the LifeCam Cinema hardware will be not detected. Additionally, in the Device Manager, the properties for the LifeCam entry display one of the following codes or different codes:
1,10, 19, 28,39
Now let 's solve the problem with the following ways:
How To Make Windows 7 Boot Faster
So here is the solution how to manage your startup programs and make your windows 7 boot faster. Click Begin and input "msconfig" within the Run box. Then press OK button. You will see all the services and applications which will be started automatically when your computer boots. Disable those unnecessarily items and re-boot your computer. You will see the improvement of your windows 7 boot up speed. Read more
Answered Tip:
1. The most important thing is: the candidates make to find recruiters believe that candidates in the previous units "Reason for leaving" does not exist in this hiring.
2. To avoid too detailed, too specific reasons for departure.
3. Do not doped subjective negative feelings, such as "too hard" and "complex interpersonal relations", "Management is too confusing," the company does not focus on talent, "the company exclusion of certain of our employees".
4. But can not dodge, evade, such as "want a change of environment", "personal reasons".
5. Can not involve their own negative personality traits, such as dishonesty, laziness, lack of sense of responsibility not easygoing.
6. As far as possible the reasons explained in the personal image of the candidate luster.
7. Examples: "I am leaving because of the collapse of this company; I worked for three years in the company, there are deeper feelings; from the beginning of last year, the mutations due to market conditions, the company's situation worsened; to now this step, I think Unfortunately, but also face re looking to play my ability to stage the same interview questions is not only an answer with an answer is not in any interview occasions are valid, the key candidates to master the law , to grasp the specific circumstances of the interview, and consciously try to figure out the psychological background of the interviewer to ask questions, and then match up. Read more
Answered Tip: honest, flexible and easy to get along with people, "real action".
Answered Tip:
1.The silence is golden, do not say anything, otherwise the situation is worse, but I will accept constructive criticism. 2. I will wait for everyone to calm down and discuss it.
The prompt answer: all of us was born perfect, I believe I have a second chance to correct my mistake. Read more
The prompt answer: at their own expense to participate in training courses of Jade Bird (you can talk more about their own learning techniques).
Answered Tip: go to the company before the interview, check the Internet at the company's main business. If the answer: Your company intends to change its strategy to strengthen cooperation with foreign manufacturers, OEM and part of its own brand through overseas distributors.
Answered Tip: want to know the enthusiasm and understanding of the interview on this work, and filter on a whim from the examination of the person, if inexperienced, stressed that "even rank different, and also hope to have the opportunity to play before experience ".
Prompt answer: Most people answer this question too ordinary, just say the name, age, hobbies, work experience, these have on the resume. In fact, most want to know the job seeker's ability to perform the work, including: the strongest skills, the most in-depth knowledge of areas of research, the most active part of the personality, the most successful things done, the main achievement of these all OK and learning, and learning, but to highlight the positive personality and ability to do things right to reasonable business will not believe it. Enterprises attach great importance to the courtesy of a person's job seekers have to respect the examiner, said in answer each question a "thank you" and companies like polite job-seekers.
Answered Tip: calm, well-organized, stand firm, tenacious up, helpful and caring, adaptability and sense of humor, optimism and friendliness. Jade Bird after one to two years of training and project combat, plus internship, make me fit for the job. Read more
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