Identify which interfaces are on your computer's motherboard

Friend told him to save a new computer, but now hard to find, ask how to deal with. Small make friends first check the motherboard's SATA interface and the hard drive interface is connected correctly. Just then, the other side of the phone suddenly did not sound, 1 minutes after the other side of the voice passed over, what the sa ... Tower interface? What's the power? What's this all about? The little series was panicked at the time, the University of the 3 years computer department is how to read the sweat .... Finally, the small part of the friend's home to help check the failure and troubleshooting (the cause of the failure is only the motherboard SATA interface is not plugged in, after the new insertion of the trouble-free access to the system)

Motherboard interface Large-size collecting

Through this matter let the author understand that there are still many users do not know what the inside of the computer exactly what parts, how are they connected? Therefore, the author wrote today This simple mobile "motherboard knowledge popularization of the interface chapter", I hope that computers are not very familiar with the friends can read the following, Knowledge can be used in everyday life.

Currently the most application interface

SATA Hard Drive interface

SATA Disk Interface

SATA is the abbreviation for Serial ATA, which is serial ATA. This is a new type of hard drive interface that is completely different from parallel ATA and is named for transmitting data serially. SATA bus uses embedded clock signal, with stronger error correction ability, compared with the past, the biggest difference is that the transmission instruction (not only the data) can be checked, if the error is automatically corrected, which greatly improves the reliability of data transmission. The serial interface also has the advantages of simple structure and hot-swappable support.

PCIe interface

PCIe Expansion Interface

PCIe interface is all called PCI Express interface mode, usually used for video card, network card, sound card and other expansion equipment. Compared to traditional PCI and AGP slots, pci-express is more likely to produce value because it is more measurable than the PCI bus. At present, to meet the hard disk controller, gigabit network cards and other large bandwidth requirements of the expansion of equipment, with the expansion of star-wide performance and many other advantages, the current application on the desktop is very common.

Motherboard Power Supply Interface

Motherboard Power Supply Interface

The early motherboard power supply interface is 20pin, now with the hardware of the demand for power gradually increased, the power supply is more than 24pin interface. However, if your motherboard is not connected to too many devices 20pin power can also be used as a 24pin motherboard power supply.

Currently the most application interface

Memory interface

DDR3 Memory Interface

The memory interface is usually located near the CPU socket, the user only need to insert the appropriate memory category to be able to use (the motherboard support memory information can be found from the motherboard manual), the figure is DDR3 DRAM slot, which supports the memory category of DDR3 memory.

I/O interface

Backplane expansion I/O interface

The I/O interface is an electronic circuit (in the form of an IC chip or interface board) with a number of dedicated registers and corresponding control logic circuitry. It is the medium and bridge for exchanging information between CPU and I/O devices. The connection between CPU and external device, memory and data exchange all need to be realized through the interface device, The former is called an I/O interface, while the latter is called a memory interface. Memory is usually in the synchronization of the CPU operation, the interface circuit is relatively simple, and I/O device variety, and its corresponding interface circuit is also different, so it is customary to say that the interface is only referring to the I/O interface.

USB interface

USB interface (Hot swappable)

Universal Serial Bus (English: Universal Serial bus, referred to as USB) is a serial bus standard for connecting external devices, which is widely used on computers, but can also be used on set-top boxes and game consoles, supplementing standard on-the-go (OTG) Enables it to be used to exchange data directly between portable devices.

An interface that gradually moves towards the stage of history

PS/2 interface

Ps/2 Interface interface

The PS/2 interface has a single function and can only be used to connect the keyboard and mouse. In general, the mouse interface is green, the keyboard interface is purple. The PS/2 interface has a slightly faster transfer rate than the COM interface, and with the rapid popularity of USB devices, the use of this interface is becoming less common, and many high-end motherboards have abandoned it.

LPT interface (with Port)

Port Printer Interface

Typically used to connect a printer or scanner. Its default interrupt number is IRQ7, with a 25-foot DB-25 connector. The working mode of the same port mainly has three kinds: 1, the SPP standard work mode. SPP data is half duplex unidirectional transmission, the transmission rate is slow, only 15Kbps, but the application is more extensive, generally set as the default mode of operation. 2. Epp enhanced mode of operation. EPP uses bidirectional half-duplex data transmission with a much higher transmission rate than SPP, up to 2Mbps, and there are many peripherals that use this mode of operation. 3. ECP expansion type working mode. ECP uses bidirectional full-duplex data transmission, the transfer rate is higher than EPP, but the support of the equipment is not many, is now nearing elimination, we just need to understand.

Confusing case due to interface what is the most appropriate mouse insertion?

The secret of the Backplane interface

In a common application, the mouse connection USB or PS/2 function is consistent, but in the case of the USB and PS2 interface coexistence, we usually choose the former. The reason for this is that USB has a more efficient and stable transfer rate, while PS/2 bandwidth and speed are far from the USB interface.

When we are in the game or some need to pinpoint the operation, the same mouse connected to the USB and PS/2, we can feel the gap is huge, first of all, fluency in the USB interface than PS/2 to smooth more. When we are doing "wrist movement", the moving range is relatively small and slow, the amount of data scanned small, 125hz/m interface transmission speed enough to transfer the data in a short time, so the movement speed is normal, while doing "arm movement", the scanning range increases, moving faster, the amount of data scanned increased. PS/2 interface in order to control the instantaneous throughput, the mouse refresh rate must be reduced, resulting in the loss of some of the moving details, positioning accuracy is naturally affected.

When the PS/2 interface access to the keyboard device, we can feel the difference compared to the USB interface is very small, the most obvious difference is the key conflict, so the current mechanical keyboard is rarely useful on the PS/2 interface.

The author in the above will be commonly used in some of the interface types are introduced, compared to beginners can also through this article to understand some of the basic knowledge of computers, in the future, some problems in the computer, we first want to observe whether these interfaces are loose phenomenon, in turn these interfaces from the new Plug and pull again, Some puzzling problems may easily be solved.

Data analysis of mouse technology?

This stuff should never come.

Many peripheral enthusiasts know that the optical mouse hormones and indicators only two aspects, that is, DPI and CPI, in short, DPI is the dot per inch abbreviation, each moving 1 inch corresponding screen points. CPI is the abbreviation for counts per inch, measured in inches. The indicator of 400CPI indicates that the coordinates are returned 400 times per inch of movement. At present, the player also has a misunderstanding, is the excessive pursuit of these two parameters of the size of this is absolutely wrong. Also, peripheral manufacturers are now misleading to advertise their products. In the case of Logitech and Microsoft's photoelectric professional mice, they have reached the technical indicators sufficient to meet any professional game player. Their DPI and CPI are high enough, to what extent? already higher than the speed of manual movement!

PS/2 different compute bandwidth from the USB interface?

The principle of PS/2

The data can be found on the Internet shows that the maximum transmission rate of USB 2.0 is 480Mbps (currently USB3.0 device is very small, we do not talk about here), and the PS2 interface and USB have a very different concept, because PS/2 is the input device interface, not the transmission interface. So it has no transfer rate but only scan rate. This is an essential concept. is also the most obvious difference from USB. So there is no comparison of transmission rates.

The mouse movement principle determines the USB interface to be more stable

Mouse transfer speed

The transfer between the mouse and computer is not based on how much distance you move to see, moving more than the transfer of more? Don't move or not transfer? Such a view is taken for granted. The transfer between the mouse and the computer is not volatile, but basically stable. Only if the mouse is not moved for a long time, the photoelectric will automatically enter the semi-dormant state. In layman's words, the mouse is connected to the open PC after it enters the transmission stage, whether the mouse is motionless, the data between the mouse and the PC are in the transmission.

Chipset evolution causes PS/2 interface to be eliminated

PS/2 is compressed most motherboards are obsolete

The above data analysis tells us that the PS/2 interface when connecting the input device, the application experience is very good, then why such an interface is also faced with the fate of the elimination? We turn our attention to the current board on sale. We will find that the current PS/2 interface has not been completely eliminated, there is a small portion of the motherboard still with a removable mouse or keyboard PS/2 interface, but most of the motherboard has abandoned the PS/2 interface and enhance the number of USB interface. This is entirely because the USB controller has been integrated bridge chip (most of the commercially available motherboards can natively support 4 or more than 4 USB ports), the cost of the problem has been resolved, and the USB interface compared to PS/2 has a high rate, can be hot plug at any time and many other advantages, driven by a variety of reasons, ps/ 2 can only gradually become a milestone in the historical stage.

Interface knowledge and application summary

interface of the motherboard

Summary of interface popularization

With the current product evolution, the motherboard interface has been a lot of changes, such as: In recent years, the popular HDMI, DP and other display interface, Mini-sata Hardware Device interface, USB3.0 transmission interface, but also gradually discarded the printer, COM, PS/2 and other non-commonly used interfaces. The author uses the above text to ask you to do a summary of the interface functions, if you are still a rookie user, if your girlfriend still do not understand the connection of the computer, then, please send this article to them! I believe it will save you a lot of telephone fees and experience, but also make these do not know DIY readers learn more knowledge.