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Shenzhen New Fly Technology Co.,Ltd

Address:Rm. 503, Floor 5, Bldg. 130, Shiao Village, Dalang, Longhua New Dist., Shenzhen, Guangdong, China

Contact:JOSH Liu 


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Development of computer peripherals and the future
- Dec 09, 2016 -

It is well known that in the PC (Personal Computer or PC) in the development of, the bus has become the bottleneck for system performance, this is mainly CPU (Central Processor Unit the central processing unit) due to upgrading and expanding. Bus is a technique widely used in computer systems. Bus is a set of signal lines, is more than 2 modules (subsystem or equipment) between communication channel, is a microprocessor core with an external hardware interface. Since the advent of IBM PC in more than 20 years, with the rapid development of microprocessors, PC applications continues to expand, the bus has been corresponding with innovation. By PC/XT into ISA, MCA, EISA, VESA and then to PCI, AGP, IEEE1394, USB bus. The reason is because CPU processing power to elevate, but connected peripheral devices channel bandwidth is too narrow and always lagged behind the CPU processing power, which makes people have to change buses, especially the local bus. At present, the AGP local bus data transfer rates of up to 528MB/s,PCI-X up to 1GB/s, from 66MB/s system bus transfer rates even higher to 100MB/s 133MB/s, and 150MB/s. Bus for this innovation, promote the improvement of the PC system performance. With the development of computer systems, some bus standard is still under development, improving at the same time, there are certain standard will be eliminated due to its outdated technology. Of course, with the need of technology development, there will be a new bus technology developed, and in a competitive market, different buses will also have their own specific field of application. At present, in addition to the familiar, popular PCI, AGP, IEEE1394, USB, bus outside, there's the EV6 bus, PCI-x local bus, NGIO bus, which appeared to some extent represents the development trend of bus technology in the future. For 20 years, CPU has developed rapidly to 6-7, the corresponding bus technology innovation has reached more than 10 times as much. From this point of view to predict, at the beginning of the 21st century, CPU clock speed trend of accelerating development, plus the memory access time by shortening PC system bus is bound to increase data transmission rates of innovation:
1, ISA-bus
ISA (Industry Standard Architecture that is the industry standard architecture bus) is a United States industry standards set by IBM Corporation as a 286 computer bus. The bus width is 16 bits of the bus, bus frequency is 8MHz.
2, the EISA Bus
EISA (Extended Industry Standard Architecture, extended industry standard architecture bus) is a 32-bit CPU (386, 486, 586, etc) design of bus industry standards. EISA Bus includes all ISA bus performance, but also expanded from 16-bit to 32-bit bus width, bus frequency from 8.3MHz to 16MHz
3, MCA bus
MCA (Micro Channel Architecture the microchannel bus architecture) is the IBM company designed for the PS system (using Intel processor chip, PC systems) developed bus architecture. The bus is a 32-bit bus width, high bus frequency is 10MHz. Although MCA bus speed faster than ISA and EISA, but IBM MCA bus is implemented using the license system, MCA bus is not the same as ISA and EISA bus is effectively promoted.
4, VESA bus
VESA (Video Electronics Standards Association the Video Electronics Standards Association) is a VESA Organization (initiated in 1992 by IBM, Compaq, with the participation of more than 120 companies) by local bus (Local Bus) standard design of an open bus. Bus width 32-bit VESA bus, most bus at 33MHz.