A driver is a small piece of code added to the operating system, which contains information about hardware devices. With this information, computers can communicate with devices. Drivers are configuration files written by hardware manufacturers according to the operating system. It can be said that without the driver, the hardware in the computer can't work. Different operating systems have different hardware drivers, and each hardware manufacturer will constantly upgrade the drivers to ensure compatibility and enhance hardware functions. For example, NVIDIA Graphics Chip Company will upgrade its graphics card drivers 2-3 times a month on average. Driver is a part of hardware and an indispensable component when you install new hardware. Whenever you install a hardware device that does not belong to your computer, the system will ask you to install a driver to connect the new hardware with the computer system. The driver plays the role of communication, telling the function of the hardware of the computer system, and also conveying the instructions of the system to the hardware to start working.
When you install new hardware, you will always be asked to put in the "driver of this hardware", and many people begin to have headaches at this time. Either you can't find the CD of the driver, or you can't find the location of the file, or you don't know what a driver is at all. For example, installing hardware peripherals such as printers is not done by connecting cables. If you start using it at this time, the system will tell you that you can't find the driver. What shall we do? The installation may not be smooth according to the instructions. In fact, there are some established and general rules for installation, which can help you achieve barrier-free installation.
Under the Windows system, it is necessary to install a complete set of drivers such as motherboard, CD-ROM drive, graphics card and sound card. If you need to connect other hardware devices, you should also install corresponding drivers, such as handles, steering wheels, rockers, dance carpets and so on. External game hardware, printers with external printers, drivers of network cards, Moden and even ISDN and ADSL access the Internet or LAN. Do you have a headache after talking so much about drivers? Here are the drivers of different hardware devices in Windows system, hoping to brighten your eyes.
Under Windows 9x, drivers can be divided into: sound card driver, graphics card driver, mouse driver, motherboard driver, network device driver, printer driver, scanner driver and so on. Why is there no CPU or memory driver? Because CPU and memory need not be driven, not only that, but most keyboards, mice, hard disks, floppy disks, monitors and standard devices on the motherboard can be driven by the standard drivers that come with Windows, except for other specific functions. If you need to use the optical drive in DOS mode of Windows system, you need to install the optical drive in DOS mode. Most built-in expansion kit cards such as graphics cards, sound cards and network cards, and peripherals such as printers, scanners and external modems need to be equipped with drivers that match the device model, otherwise they will not be able to play some or all of their functions. Drivers can generally be obtained in three ways: first, the purchased hardware comes with drivers; Second, the Windows system comes with a lot of drivers; Third, download the driver from the Internet. The last method is usually to get the latest driver.
The driver package of Windows 9x usually consists of some files, such as. Vxd (or.386),. drv，。 sys，。 Dll or. exe。 During the installation, most files will be copied to the "Windows\ System" directory.
How does Windows know which device is installed and which files to copy? The answer is. Inf file. . Inf is a file that describes the equipment installation information imported from the Windows 95 era. It uses specific syntax words to explain the type of device to be installed, manufacturer, model, file to be copied, target path to be copied, and information to be added to the registry file. By reading and explaining these words, Windows knows how to install the driver. At present, almost all drivers provided by hardware manufacturers for Windows 9x have installation information files. Actually. Inf file can not only be used to install drivers, but also be independent of hardware. ......
What does the computer test mean for cars?
Computer test refers to the computer test of driving training knowledge for students after a period of study. Good luck. Peng Aimin, Shenzhen Longhua accountant.
What does this computer mean?
No system found.
What are the process parameters on the computer? It determines the main factors to be considered.
The tension on the loom refers to the static tension during weaving, which is the basis of the warp tension in each period, and should be specified as the process parameter when weaving on the loom. On-machine tension will have a significant impact on warp yarn breakage rate, shed clarity, beating-up smoothness and fabric appearance effect, which is a process parameter throughout the weaving process. Therefore, in order to make the process go smoothly, improve the production efficiency, and make the fabric get good internal and external quality, appropriate tension should be adopted. In general, the tension of a single yarn on a loom does not exceed 30% of the breaking strength of spun yarn.
In order to meet the requirements of straight warp and weft and prominent particles, the tension on the machine should not be too large; However, if the tension on the machine is too small, it will affect the uniformity of the cloth surface, with serious streaking and high warp density, and it is easy to appear defects such as star jumping and warp shrinkage. Therefore, in production, the tension of poplin is generally slightly larger than that of plain cloth, but when the tension of warp yarn in preparation process is relatively uniform. The tension on the machine should be very small when the opening is clear. Generally speaking, the cloth width on the machine is 4 -6mm smaller than the standard cloth width.
For plain cloth, in order to make the cloth surface smooth and easy to tighten the weft yarn, the tension of the warp yarn on the loom is larger. It is generally known that the width of the cloth on the loom is mm higher than that of the finished cloth.
Twill and khaki fabrics strive for clear twill lines, that is, they are required to be deep (high ratio of warp and weft buckling waves), even (equidistant twill lines) and straight (equal length of warp and weft). When the loom tension is small, the warp is easy to bend and the grain appears deep, but when the loom tension is small, the uneven tension of the warp can not be improved, which will make the cloth surface uneven and the grain not straight. Therefore, the loom tension of twill and khaki should not be too small, and it is generally woven with large loom tension. Usually the loom width is 6mm smaller than the specification. If the warp tension is uniform and the winding is uniform, a smaller tension can be used.
What does computer power mean?
Computer ability refers to whether the computer operation is handy and whether the software operation is skilled.
Ability is the quality reflected in completing a project goal or task. People show different abilities in completing activities. Refers to the subjective conditions necessary for the successful completion of an activity. Ability is a personality psychological characteristic that directly affects the efficiency of activities and enables them to be successfully completed.
Ability is always associated with people completing certain practices. Without concrete practice, people's ability can neither be expressed nor developed. The conditions and level of achieving the goal.
Who can tell me how to pass the computer exam smoothly? (except copying)
During the enrollment period every year, there will be some lawless elements who conduct enrollment fraud activities for the purpose of seeking money under various excuses. The majority of candidates and parents should raise their awareness of prevention and pay attention to identifying the fraudulent methods of admissions scammers.
Trick 1: confuse the form of education and cheat.
There are many forms of higher education. Some admissions scammers deliberately confuse the differences between online education, adult education, self-study counseling, Sino-foreign cooperation in running schools and ordinary higher education, and deceive candidates who want to go to ordinary undergraduate colleges, claiming that they can go to universities or even key universities as long as they pay. After spending money, parents got the admission notice, and only when they entered the school did they know that they were cheated: they were not undergraduate or junior college students in general higher education at all, but self-taught pilot classes, adult education preparatory classes, online colleges or Sino-foreign cooperative education projects.
Preventive reminder:
Online education, adult education, self-taught examination and some Sino-foreign cooperative education projects are also forms of higher education, but different from ordinary higher education, the entry threshold is low. You can also participate in online education and self-study exams without college entrance examination results.
Trick 2: Pretending to be a college employee to cheat.
The swindler claimed to be the admissions officer of a university, holding the enrollment publicity materials of a university, meeting with candidates and parents, boasting endlessly, and tricking students and parents into filling in their volunteers. After gaining the trust of his parents, he emphasized the difficulty of admission and hinted that he could help. Parents were generous to their children's future and were cheated as a result.
Preventive reminder:
The admission work is all implemented by remote online admission in different places, and no human factor can affect the admission result.
Trick 3: claim that "low scores and high records" are tricks.
Liars claim to be acquaintances or relatives of admissions colleges or leaders, claiming that they have a way to get candidates who do not meet the first batch of undergraduate admission qualifications to be admitted to the first batch of undergraduate colleges, while undergraduate majors only have three batches of fractional admission, thus defrauding candidates of a lot of money.
Preventive reminder:
The Provincial Education Examinations Institute strictly implements the batch line and does not accept candidates who do not meet the policy requirements under the batch line; In addition to the care policies stipulated by the state and the province, no one enjoys privileges in college enrollment.
Trick 4: Lie that there are "internal indicators"
Liars often lie that they have some "internal indicators" and "small plans" when forging files and seals, setting up registration offices and consulting telephones, or pretending to be "so-and-so enrollment information network", or pretending to be college admissions personnel to meet parents, and ask parents to pay part of the deposit first, and then pay the rest after getting the admission notice. When the parents paid the deposit in full, they forged a notice for their parents, or simply rolled up the money and ran away.
Preventive reminder:
The Provincial Education Examinations Institute strictly implements the enrollment plan issued by the state and the province, and it is impossible for any individual to say that he has an enrollment plan and quota.
Why does the computer always turn off?
Six tricks: quickly respond to computer failures
In the days of "close contact" with the computer, you may encounter such a strange phenomenon, that is, after the shutdown operation, the computer system is slow to respond, or the system pops up a black screen with only the mouse pointer. At this point, most of the shutdown functions of the computer system have failed. So how to face this phenomenon quickly? To this end, this article provides the following methods to help you check the reasons one by one, so as to quickly restore the failed shutdown function.
Understand the shutdown process
Generally speaking, once you execute the shutdown command of Windows system, the system will complete all disk storage operations first, and after all tasks are saved, the system's disk cache will be emptied automatically. After that, Windows will close the currently opened application windows one by one, and automatically convert those drivers with protected mode into real mode. After the above operations are completed, the system shutdown task is completed. In this process, if the related configuration or hardware is damaged, or the advanced power management and advanced configuration settings of the system BIOS are incorrect, it may lead to the failure that the computer cannot shut down the system.
Specific response measures
If you unfortunately encounter a fault that cannot be closed, you can follow the following steps to conduct a step-by-step investigation:
1, sound file, is it normal?
If the exit sound of Windows system shutdown is set, once the sound file is damaged, the computer will not shut down normally. Therefore, it is the first task to check whether the sound file of the system is normal. During the inspection, you can click the Start/Settings/Control Panel command. In the pop-up control panel window, double-click the sound and multimedia file icon. In the settings window that opens later, select the sound tab, and in the tab page shown in figure 1, select the exit window option in the sound event. Then turn off the computer again. If the computer can shut down normally after canceling the sound, it means that the current shutdown fault is caused by exiting the sound file. To eliminate this failure, you can reinstall the application that provides the sound file or restore it from a backup file. If you really can't recover, you can cancel the power-off tone directly.
2. Are the hardware devices compatible?
As we all know, Windows 98 operating system has the function of fast shutdown, which can effectively reduce the waiting time for shutdown. However, this function is easily incompatible with some hardware devices in the computer system, which easily leads to the system not responding when the computer is turned off. So once you encounter the phenomenon that you can't turn it off, you can restart the computer system and click Start/Execute command in turn. In the pop-up execution dialog box, execute the Msconfig command. In the configuration window that opens later, select the Advanced tab and turn off the quick close function of this tab page. After that, shut down the computer to see if it can be shut down normally. If it can be turned off, it means that the hardware devices in the computer are really incompatible. To ensure a smooth shutdown in the future, you must set the "Quick Shutdown" function to be disabled.
3. Is the power management normal?
Sometimes the advanced power management function of the computer will also cause the system to fail to shut down normally, so it is necessary for us to check whether the advanced power management function of the system is normal. When checking whether the power management function is related to the shutdown failure, you can click Start/Program/Management Tool/Computer Management Command in turn, expand the system tool/device manager option in the pop-up management window, expand the system device option in the right sub-window of the interface in Figure 2, and then click Advanced Power Management Settings. After that, try to turn off the computer again. If it can be shut down successfully, the shutdown fault is related to power management. The only way to eliminate this phenomenon is to disable the power management function.
4. Is the core file damaged?
Maybe you see each other often. ......
When learning computer, what does it mean to learn hardware and software? What do they do? What's the use?
Literally, hardware refers to computer parts, and software is executed by computers. For example, a game is software.
What does computer security mode start mean?
Safe mode is a special mode in Windows operating system, and friends who often use computers will certainly not feel strange. In safe mode, users can easily fix some errors in the system, which will get twice the result with half the effort. The working principle of safe mode is to start the computer without loading the third-party device driver, so that the computer can run in the system minimum mode, so that users can easily detect and repair computer system errors.
Method for starting computer security mode:
(1). Press the power button to start the computer;
(2). When the boot screen appears, press F8 quickly;
(3) Until the system enters the advanced startup option of Windows;
(4) Find "Safe Mode" through the direction keys and press Enter to enter.