Inevitability of USB Flash Drive
With the rapid development of computer hardware, peripherals increasing number of keyboard, mouse, modem, printer, scanner is already well known, digital camera, MP3 player after another, so much equipments, how to access the personal computer? USB is generated for this purpose. USB is a computer peripheral device connected to standardized single interface specification developed by Intel, NEC, Compaq, DEC, IBM, Microsoft, Northern Telecom, Contact. The USB1.1 standard interface transfer rate is 12Mbps, but a usb design device can only get 6Mbps bandwidth.
Introduction of USB Flash Drives
USB disk is referred as U disk, or USB flash drives. It is a removable storage device for backing up data, and easy to carry. U disk is one of the flash disks, also called flash drives. It is characterized by compact it and carry large storage capacity, the price is cheap. The general U disk capacity is 64M, 128M, 256M, 512M, 1G, 2G, 4G, etc. For example, the most common 1G price is around $ 65. U disk capacity has been greatly increase, such as the 4G, 16G metal usb flash drive. They are easy to carry, and we can hang it in the chest, hanging on a keychain, and even into the wallet. Anger the frogs network planning institutions think U disk in fact, is a removable hard drive, but science and technology will always be for the convenience of human services, designers will be huge hard drive narrowed to a small one, is more conducive to the portability and application of human, from the this regard, the science and technology to facilitate human life is also good.
Maintenance of USB Flash Memory
Never unplug the flash drive when flash drive lights are flashing too fast, because the then U flash disk is reading or writing data, the halfway pull out may cause hardware damage data. Do not shut down immediately after the backup documentation related to the program, because that time USB disk indicator is still flashing, the program is not completely over, then pull out the USB disk, easily affect backup. So file backup to flash after-hours, should be some time off related procedures to prevent accidents; attention to the U disk is placed in a dry environment, do not let the U-the Handicap interface exposed to the air for long periods of time, or likely to cause the surface of the metal oxidation, reduce interfaces sensitivity. Not for long periods of inactivity U disk inserted in the USB interface, otherwise the one hand, it is easy to cause the interface aging, on the other hand it is also a loss of USB disk.
This article is come from:http://www.chinaphoneparts.com/index.php/application-of-usb-flash-disk.htm
Showing posts with label usb design. Show all posts
Showing posts with label usb design. Show all posts
Thursday, September 27, 2012
Tuesday, August 21, 2012
Status and Future Development of USB Design
Applications USB Design
USB flash drive is the most obvious portrayal for USB steps into everyday life, in fact, as early as before the USB flash, flash memory has emerged in many electronic products. The traditional store data by using RAM-volatile storage battery data will be lost easily. If the battery is out of power, then the data will be lost. By using flash memory products, we can overcome this problems, it is more reliable for data storage. In addition to the USB flash drive, flash memory has also been used in the computer BIOS, PDA, digital cameras, voice recorder, mobile phones, digital televisions, game consoles and other electronic products. The flash drive can also be used to exchange data between computers.
Advantages of USB Flash Drive
Speaking from capacity, flash drive capacity is optional from 16MB to 2GB, break through the limitations of the floppy of 1.44MB. Speaking from the read and write speed, the USB flash drive using the USB interface, its read and write speeds is much higher than a floppy disk. Speaking from stability, flash disk has no mechanical read-write device, this avoids the problem of mobile hard disk is easily damaged. Part of the USB flash drives has encryption and other functions, and this makes users more personalized. The flash drive is very small and easier to carry. It supports USB interface hot-plug, convenient to use. At present, the flash drive is developing in the direction of large-capacity, low-power and low-cost. And the styles are various, there are such as leather USB flash drive, wood usb flash drive and so on.
USB Flash Drive Market Analysis
The usb design market is still not mature at present. Samsung, Hitachi, Spansion and Intel are the four manufacturers in this market. Due to some errors on the strategy, Intel, for the first time, gives up the top seat, and falls to Samsung, Hitachi and Spansion. AMD's flash drive business sector Spansion produces NAND and NOR flash drive at the same time. Its NOR flash drive production of the last half year is almost equal to Intel, and becomes the largest manufacturer of NOR Flash Drive. The company's profit in the first half of this year is $ 1.3 billion, almost more than half of the entire company profits ($ 2.5 billion). According to the market research from firm of iSuppli, it estimates that the global flash revenue of this year will reach $ 16.6 billion, increased by 46% compared with the year 2003 ($ 11.64 billion). And according to the forecast, the USB design sales in 2012 will reach $ 17.5 billion.
This article is come from: http://www.usbdesign.cn/blog/?p=12
USB flash drive is the most obvious portrayal for USB steps into everyday life, in fact, as early as before the USB flash, flash memory has emerged in many electronic products. The traditional store data by using RAM-volatile storage battery data will be lost easily. If the battery is out of power, then the data will be lost. By using flash memory products, we can overcome this problems, it is more reliable for data storage. In addition to the USB flash drive, flash memory has also been used in the computer BIOS, PDA, digital cameras, voice recorder, mobile phones, digital televisions, game consoles and other electronic products. The flash drive can also be used to exchange data between computers.
Advantages of USB Flash Drive
Speaking from capacity, flash drive capacity is optional from 16MB to 2GB, break through the limitations of the floppy of 1.44MB. Speaking from the read and write speed, the USB flash drive using the USB interface, its read and write speeds is much higher than a floppy disk. Speaking from stability, flash disk has no mechanical read-write device, this avoids the problem of mobile hard disk is easily damaged. Part of the USB flash drives has encryption and other functions, and this makes users more personalized. The flash drive is very small and easier to carry. It supports USB interface hot-plug, convenient to use. At present, the flash drive is developing in the direction of large-capacity, low-power and low-cost. And the styles are various, there are such as leather USB flash drive, wood usb flash drive and so on.
USB Flash Drive Market Analysis
The usb design market is still not mature at present. Samsung, Hitachi, Spansion and Intel are the four manufacturers in this market. Due to some errors on the strategy, Intel, for the first time, gives up the top seat, and falls to Samsung, Hitachi and Spansion. AMD's flash drive business sector Spansion produces NAND and NOR flash drive at the same time. Its NOR flash drive production of the last half year is almost equal to Intel, and becomes the largest manufacturer of NOR Flash Drive. The company's profit in the first half of this year is $ 1.3 billion, almost more than half of the entire company profits ($ 2.5 billion). According to the market research from firm of iSuppli, it estimates that the global flash revenue of this year will reach $ 16.6 billion, increased by 46% compared with the year 2003 ($ 11.64 billion). And according to the forecast, the USB design sales in 2012 will reach $ 17.5 billion.
This article is come from: http://www.usbdesign.cn/blog/?p=12
Wednesday, August 8, 2012
Widely Application of USB Device
Computer USB Design
With the rapid development of computer hardware, and the number of peripherals is growing day by day, such as the keyboard, mouse, modem, printer, and scanner has long been well known by many people, and then the digital cameras, MP3 players follow up, so much equipments, how to access to the personal computer? This is a question. Use USB! The usb design is a computer peripheral device connected to standardization, a single interface, and its specifications are jointly developed by Intel (Intel), NEC (Nippon Electric Co., Ltd.), Compaq (Compaq) DEC (Digital Equipment Corporation), IBM (International Business machines Corporation), Microsoft (Microsoft), northern Telecom (Northern Telecom).
USB1.1 Device
The transfer rate of USB1.1 standard interface is 12Mbps, but a USB device can only get 6Mbps of bandwidth at most. To an external drive, it can by far be able to take up to six-speed CD-ROM, the speed can be no longer high. If to real-time playback a MPEG-1 VCD movie, it needs at least 1.5Mbps bandwidth, USB 1.1 to do this, but is maybe very difficult to complete the MPEG-2 DVD movie which the data volume is four times larger than the common one. when coupled with the AC-3 audio data, USB devices, it is very very difficult to achieve real-time broadcast. An USB port can theoretically support 127 devices, but in fact this can not be achieved at present. In fact, for a computer, the peripherals connected is usually not more than 10, so this figure is enough for us to use in daily life. USB also has a significant advantage, that is hot swapping, which means that you can safely connect or disconnect the USB device with the machine on, to achieve the true on-plug and on-play. However, not all Windows system supports USB, in other words, not all wholesale usb is suitable for all Windows system. At present, for Windows system, there are many different versions, of these versions, only the Windows98 above system has better support for USB, while the other version of Windows does not support USB. Such as the retail version of Windows95 does not support USB, and only the later Windows95 version with the PC bundled sales supports USB.
USB 2.0 Devices
Although USB device is widely used now, but the more generally used is USB2.0 interface, its transmission speed is 480Mbps. The needs of users are the driving force to promote technological development, the manufacturers also recognize this bottleneck. At this time, COMPAQ, Hewlett Packard, Intel, the Lucent, Microsoft, the NEC and PHILIPS 7 vendors have jointly developed the standard of USB 2.0 interface. USB 2.0 data transfer speeds between devices has increased to 480Mbps, 40 times faster than USB 1.1 standard, the speed increases means the maximum benefit for users and users can be more efficient to use an external device.
This article is come from: http://www.usbdesign.cn/blog/?p=4
With the rapid development of computer hardware, and the number of peripherals is growing day by day, such as the keyboard, mouse, modem, printer, and scanner has long been well known by many people, and then the digital cameras, MP3 players follow up, so much equipments, how to access to the personal computer? This is a question. Use USB! The usb design is a computer peripheral device connected to standardization, a single interface, and its specifications are jointly developed by Intel (Intel), NEC (Nippon Electric Co., Ltd.), Compaq (Compaq) DEC (Digital Equipment Corporation), IBM (International Business machines Corporation), Microsoft (Microsoft), northern Telecom (Northern Telecom).
USB1.1 Device
The transfer rate of USB1.1 standard interface is 12Mbps, but a USB device can only get 6Mbps of bandwidth at most. To an external drive, it can by far be able to take up to six-speed CD-ROM, the speed can be no longer high. If to real-time playback a MPEG-1 VCD movie, it needs at least 1.5Mbps bandwidth, USB 1.1 to do this, but is maybe very difficult to complete the MPEG-2 DVD movie which the data volume is four times larger than the common one. when coupled with the AC-3 audio data, USB devices, it is very very difficult to achieve real-time broadcast. An USB port can theoretically support 127 devices, but in fact this can not be achieved at present. In fact, for a computer, the peripherals connected is usually not more than 10, so this figure is enough for us to use in daily life. USB also has a significant advantage, that is hot swapping, which means that you can safely connect or disconnect the USB device with the machine on, to achieve the true on-plug and on-play. However, not all Windows system supports USB, in other words, not all wholesale usb is suitable for all Windows system. At present, for Windows system, there are many different versions, of these versions, only the Windows98 above system has better support for USB, while the other version of Windows does not support USB. Such as the retail version of Windows95 does not support USB, and only the later Windows95 version with the PC bundled sales supports USB.
USB 2.0 Devices
Although USB device is widely used now, but the more generally used is USB2.0 interface, its transmission speed is 480Mbps. The needs of users are the driving force to promote technological development, the manufacturers also recognize this bottleneck. At this time, COMPAQ, Hewlett Packard, Intel, the Lucent, Microsoft, the NEC and PHILIPS 7 vendors have jointly developed the standard of USB 2.0 interface. USB 2.0 data transfer speeds between devices has increased to 480Mbps, 40 times faster than USB 1.1 standard, the speed increases means the maximum benefit for users and users can be more efficient to use an external device.
This article is come from: http://www.usbdesign.cn/blog/?p=4
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