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Breakdown of industrial motherboard which interface
Time: 2016-09-08
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The main interface standard motherboard has what?
Motherboard hard disk interface: hard disk interface can be divided into the IDE interface and SATA interface. On some models the old motherboard, more integrated two IDE ports, IDE interfaces are usually located below the PCI slots, from the space perpendicular to the memory slot (also sideways). And on the new board, IDE interfaces were reduced, or even no, instead SATA interface.
Motherboard floppy drive connector: Connect the floppy disk used, usually located next to the IDE interface, slightly shorter than the IDE interface as it is 34-pin, so that the data line is also slightly narrower.
Motherboard COM interface (serial): Most motherboard provides two COM interfaces are COM1 and COM2, the role is to connect a serial mouse and external Modem and other equipment. COM1 interface, I / O address is 03F8h-03FFh, interrupt number is IRQ4; COM2 interface I / O address is 02F8h-02FFh, interrupt number is IRQ3. Thus COM2 port than COM1 interface has priority response, the market has been difficult to find based on the product interface.
Motherboard PS / 2 interface: PS / 2 interface relatively simple function, can only be used to connect the keyboard and mouse. Typically, a mouse interface for green, purple keyboard interface. PS / 2 interface transfer rate slightly faster than the number of the COM interface, but after so many years of use, the vast majority of motherboards still equipped with the interface, but the interface supports mouse and keyboard less, most peripheral manufacturers are no longer Release on the interface peripheral products, more is the introduction of USB interface peripherals. But it is worth mentioning that, since the interface is very wide, so even when many users are also more willing to use via USB PS / 2-USB adapter plugged into the PS / 2, keyboard and mouse plus a life of each generation We were quite long, the interface is still a very high efficiency, but in the near future is high likelihood completely replaced by the USB interface.
Motherboard USB interface: USB interface is now the most popular interface can support up to 127 peripherals, and can be powered independently, which is widely used. USB interface can be obtained from the motherboard 500mA to support hot-swappable, truly plug and play. A USB interface supports access to high-speed and low-speed USB peripherals from a four-core cable connection, two of which are positive and negative power, the other two is the data transmission line. Transfer rate high-speed peripherals to 12Mbps, low-speed peripherals transmission rate is 1.5Mbps. In addition, USB 2.0 standard maximum transfer rate of up to 480Mbps. USB 3.0 has emerged in the motherboard, and has begun to spread.
Motherboard LPT Interface (parallel): Usually used to connect a printer or scanner. The default interrupt number is the IRQ7, uses a 25-pin DB-25 connector. Parallel operating mode there are three:
1, SPP standard operating mode. SPP is a half-duplex unidirectional data transmission, the transmission rate is slow, only 15Kbps, but is widely used, generally set as the default mode of operation.
2, EPP enhanced mode. EPP bidirectional half-duplex data transmission, the transmission rate is much higher than the SPP, up to 2Mbps, there are many peripherals use this mode.
3, ECP type expansion mode. ECP bidirectional full-duplex data transmission, the transmission rate is even higher than some of the EPP, but not much supported devices. LPT interface using the printer with the scanner has been basically very little, mostly for the printer using the USB interface with the scanner.
Motherboard MIDI Interface: sound card MIDI interface and joystick interfaces are shared. The interface of the two pins used to transmit MIDI signals can be connected to various MIDI devices, such as electronic keyboards, etc., the market has been difficult to find based on the product interface.
Motherboard SATA Interface: SATA stands for Serial Advanced Technology Attachment (Serial Advanced Technology Attachment, based on industry-standard hardware serial driver interface) hard disk is determined by Intel, IBM, Dell, APT, Maxtor and Seagate jointly proposed interface specification, the IDF Fall 2001 conference, Seagate announced the Serial ATA 1.0 standard, officially declared the establishment of SATA specification. SATA external hard disk specification transfer rate of up to a theoretical value of 150MB / s, 50% higher than the PATA standard ATA / 100, higher than the ATA / 133 should be about 13%, and with the future development of the follow-up version, SATA Interface the rate can also be extended to the 2X and 4X (300MB / s and 600MB / s). Its development plan, the future of SATA will be to improve the interface transfer rate by increasing the clock frequency, so that the hard disk can be overclocked.