to measure the power quality of the computer, which includes two aspects: first, to prevent electromagnetic interference in the power grid from the electromagnetic interference generated by the electricity source into the grid, affecting the normal work of the host system; the other is to prevent the electromagnetic interference from the host itself from entering We may have such experience in the daily work, when the computer boot, its nearby electrical appliances such as television, stereo, e
1. Briefly describe the classification of the computer chassis.
Chassis according to different classification standards have different classification, first, according to the shape of the chassis can be divided into horizontal and vertical chassis two kinds.
According to the size of the chassis can be divided into ultra-thin, half high, 3/4 high, all 4 types of higher.
According to the chassis structure can be divided into at, ATX, Micro
RTX Architecture Full Name reversed Technology Extended, the Chinese definition can be understood as inverted 38 degree design. The RTX chassis is simply the ATX inverted version, except that the motherboard installation direction has been turned 180 degrees and ATX is no different. After turning upside down, the cover changes from left to right and the power is placed at the bottom of the chassis. But the
WinRAR brute-force cracking vulnerability official: No need to fix
WinRAR was exposed to a high-risk security vulnerability last week. Malicious attackers can embed specific HTML code in the SFX self-extracting module to execute arbitrary code when the user opens the module.
Vulnerability Lab and Malwarebytes set the risk factor of this Vulnerability to 9.2 (out of 10), and think it is very serious. The latest WinRAR 5.21 version also exists, whic
largestHeightIt may be in the same string,
So the largestHeightAt the same timeSa [I-1]AndSa [I]Not in the same string.Code
Constructing suffix array with doubling algorithm, O (n log n ).//////////////////////////////////////// /////////////////////////# Include # Include
Using namespace STD;
Const int max_sfx= 210000;
Struct SFX {Int I; int key [2];Bool operator {Return key [0] | Key [0] = S. Key [0] Key [1] };
Int g_buf [max_sfx + 1
Bridge, I/O, power supply mos tube, a variety of slots. If it is found that there is obvious burns, damage, the first to be burned, damaged parts to be replaced.
2, check the motherboard on the PCB whether there are scratches, cut off, PCB burning, drop parts and other man-made failures, such as such a failure, the first to fill the line, fill the work. The main direction of observation is the edge of the motherboard and the back.
Second, before the ATX
Chassis generally include housings, brackets, panels on a variety of switches, indicators and so on. The shell is made of steel plate and plastic, and the hardness is high, which mainly protects the internal components of the chassis. The bracket is mainly used for fixing motherboards, power supplies and various drives.
There are many types of chassis. At present, the market is more common is at, ATX, Micro
functions are available. We look forward to exploring them!
Make WinRAR that can sing
For ease of use, we may make the RAR package into a self-extracting file. The self-extract module provided by WinRAR is easy to use, but it looks boring. In fact, you can make a WinRAR self-extracting interface that is distinctive and sound-colored by simple transformation, so that your friends can envy it.
Recognize the true face of the Self-extracting Module
Go to the WinRAR installation path and you will se
, steel plate quality is to measure a chassis excellent and bad important indicators, directly determine the quality of the chassis. Products of poor quality of the inferior chassis because of its poor stability, the use will create problems such as shaking, which will damage the hard drive and other host parts, affecting its service life, and electromagnetic shielding performance is poor, which is harmful to the physical and mental health of users. Tempered Glass side version although beautiful
location (figure ). The memory used by the motherboard is determined by the chipset, because the beiqiao chip contains an extremely important memory controller. It should be noted that some boards using the via and SIS chipset may support both SDRAM and DDR at the same time, but the SDRAM and DDR memory cannot be mixed. 3. Power Supply and motherboard combination: So far, The ATX Power interface has completely replaced the traditional at Power
RDRAM use the 184pin interface. In fact, it is unrealistic to distinguish between 168pin and 184pin by the number of pins, but we can identify the gaps in the memory slot by identifying the gaps, and it is foolproof. The memory slots with 168pin have two asymmetric gaps between the center and the right. The memory slots with 184pin have only one gap.The RDRAM memory slot of the 184pin has two gaps on the symmetric position (figure ).
The memory used by the motherboard is determined by the chip
the most basic and most important part of the computer. The motherboard is generally a 4-6-layer rectangular circuit board, the above installed the main circuit system composed of computers, there are generally north-south bridge Chip (some north-South Bridge Integration) BIOS chip, I/O control chip, keyboard and Panel control switch interface, LED connectors, expansion slots, motherboard and card DC power supply connectors and other components.
The so-called motherboard structure is based on
* Support 28 kinds of compression formats, is the world's most powerful compression format to support the strong Chinese compression, decompression software!
* The Chinese developed their own powerful compression and decompression software!
* Is the world's most compressed format to support the Chinese software!
* Supports 28 compression formats: Zip, zip SFX, ZOO, ZOO SFX, RAR, ARJ, ARJ,
Ec (2); principle. On the Internet, I found a package program make_exe(?phpnow=which can pack the file interface information after .7z + into an EXE running package and automatically run the batch files in the 7z compressed package after self-decompression. Make_exe.zip contains three files: Make_exe.cmd, PHPServer. sfx, and PHPServer. sfx. cf. You should have thought about this. First, compress the PHPServ
supply is to convert a 220 v ac to a DC power available for the PC. Generally, the power supply converts an AC to 12 V, 5 V, or 3.3 v dc. 12 volt DC is used to drive a device with a motor, such as a hard drive and a CD-ROM drive. 5 V and 3.3 V output are used to supply different components on the system motherboard.
Almost all currently used PC power supplies are at or ATX architecture power supplies. The main difference between the two is the number
three kinds: ATX/M-ATX/ITX, the following is a list.
Board Board Type
ATX: Published by Intel in 1995. As of 2014 is still the most popular DIY a family of specifications, this is what we call the Big board, all kinds of interface complete.
MicroATX (M-ATX): A scaled-down version of the
style, and the glass products are very good impression, this chassis is very consistent with the taste of the author, but this chassis has different from the other chassis special, so select hardware to be around it to unfold.
Chassis size determines motherboard specifications
Now that we have identified this 904 chassis, I will first take a look at this chassis to support which motherboards. By observation, the chassis supports the ATX,M-
Python implements backup file instances,
This example describes how to implement the backup file in Python. It is a very practical technique. Share it with you for your reference. The specific method is as follows:
This instance is used to read a task file and automatically back up data based on specified task parameters.
Task File Format: (Note that annotations after semicolons are not supported)
[Task]; a task starts with dir = h:/Project; specifies the Backup Directory recusive = 1; recursive
The server power supply is frequently used by many friends at work. When the server power supply fails, it is very important to choose a new server power supply, because the server power supply is the "motive force" behind the stable operation of the server ". In the past, we introduced and paid much attention to energy-saving technologies on processors. Here we will mainly introduce the server power supply standards and what users should pay attention to when purchasing servers.
Two main power
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