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MP3 cultural symbol - Apple iPod       Super-high prices, exaggerated power capabilities and portability against opposite direction of the Hello Kitty MP3 Players, Creative NOMAD Jukebox birth, and not into the hard drive-based MP3 real people's lives. Until the emergence of Apple iPod ... ... Although the hard drive as MP3 using the storage medium first proposed this idea is not Apple, but the iPod MP3 Players is the best implementation of the creative product is the iPod really set off numerous people of the crazy Apple iPod the trend of hard drive MP3! iPod was born in October 2001, as a mini dv player, it is not good in many ways: the high price, sound quality generally, use the short as well as the lack of Windows to support and so on, but it is the first music to the Internet MP3 player bundled with the product. Many people are willing to pay a small amount of money to the Apple official website to download a single song, or use the flat rate unlimited Download, iPod music companies really make a profit, so are the consumers and record labels in the double support. More importantly, eliminate the appearance of the product itself and the beautiful human creations, iPod has become a fashion, as the MP3 (wholesale MP4 Players) musical culture of a flag. Have iPod, does not mean you have a best MP3, but know you are a representative of the life of a taste of the people. When something has become a culture, or even a logo, it would be difficult to replace, which is iPod MP3 Players from one generation to the fourth generation have been the biggest reason for selling! Please visit TradeTang.com.

MP3 player on the specified       MP3 is short for MPEG Audio Layer 3, MPEG compression format is the Moving Picture Experts Group (Motion Picture Experts Group) video and audio on the development of a set of criteria, including MP3 compressed audio signal is to design a new audio compression format standard.
      MP3 is the adoption of international standards in the third layer MPEG audio compression, audio signal compression on a grid innovation - small stone type, the Chinese also known as "network music." The third layer of MPEG audio compression than the first layer and second layer coding to be complex, but the sound quality than the first and second floors, even in comparison with CD sound quality. CD, sample rate frequency 44.1MHz, 16Bits, the amount of data to 1.4Mbps, while the corresponding Sports MP3 Players of MP3 data only 32kbps ~ 320kbps, is the raw data in 1 / 4 to 1 / 40. That is the traditional one CD can now be stored 4 to 40 times the music, but in the human ear sounds, feel the sound effects are no different. Mp3 is a kind of compression and decompression of the calculation method used to deal with a high percentage of sound information. iPod MP3 Players generated sound files sound close to CD, the file size is only one-twelfth of CD. If a disc can store about 15-20 form the first classical CD format, MP3 music, if saved as MP3 format, can store several hundred songs, which is its charm. MP3 occurs first goal is to reduce the file size to facilitate data transmission in the network, and to maintain the quality of the original close of play. disney mp3 player of the compression ratio can reach 1 / 4 to 1 / 40, but the sounds in the human ear, but no distortion, because it will exceed the range of human hearing the sound removed from the digital audio without altering the most The main voice. In addition, Hello Kitty MP3 Players can upload, download any other form of computer files, MP3 player with removable storage capabilities. MP3 player is actually a function of specific small computer. Small body in the mini dv player, the MP3 player has a memory (memory card), MP3 player displays (LCD display), MP3 player, central processing unit [MCU (microcontroller) or MP3 player decoder DSP (digital signal processor), etc.. Please visit TradeTang.com.

LOMO spy camera       There are many types of spy cameras, in addition to some common digital cameras and spy cameras, there is rarely seen in digital spy camera.
      LOMO is a Russian spy 50 years dedicated mini spy camera, then a student in Prague, Austria bought this an old model, rather the former Soviet Social Realism style of camera. After it back to Vienna, had become an underground art scene, the Circle of the new pet.
      Single optical instrument that lomo is the abbreviation of Leningrad, as a plant called Lomo Lc-a known camera. Now many LOFI (lo-fi) equipment have been called Lomo equipment. Please visit TradeTang.com.
      In 1996, the two students to St. Petersburg in Russia to find LOMO production plant and to persuade the head of the plant to resume production LOMOLOMO Camera LC-A. Machine to resume production immediately after the rush of young people around the world. And thus was born the "lomography" (LOMO photo) This new word. Hong Kong has held lomography exhibition ---- in the subway station where the 8000 photos taken with the LOMO put growth of 42 meters "Lomo Wall" (LOMO wall), forming a unique landscape. As the hidden spy camera in short supply, and now the website of a LOMO LOMO LC-A's offer has been increased from the original 30 dollars to nearly 200 dollars.
      LOMO LC-A requires three AG13 button-type batteries for metering. Did not hear the shutter sound when the battery but the actual shutter does not open. It is best prepared to battery backup in case the battery runs out will lead to shooting. Machine maximum aperture of 2.8, can be used from f2.8 to f16 aperture adjustment of six stalls. A for program auto exposure, the camera automatically set the aperture value at the brightness and shutter speed, metering more accurate. spy video camera when shooting in the dark to wait after pressing the shutter sound and then let go of the shutter closed, to avoid exposure by closing the shutter before the end of lead underexposed. A file on the outside when the aperture value, the program will lock the shutter speed of 1 / 60 seconds. LOMO LC-A program automatic exposure time up to 2 seconds, the shortest 1 / 500 sec. Ev values up to 17 changes (f2.8 2S'-f16 1 / 500), hidden spy cameras without shutter speed and exposure compensation adjustment, but can be done by setting the ISO, exposure compensation method. Machine body can do to iso400 from iso25's sensitivity settings.

The development of digital spy camera       Digital camera, English full name: Digital Still Camera (DSC), referred to as: Digital Camera (DC), digital spy camera is short for digital cameras, also known as: digital cameras. Digital cameras, is a use of electronic sensors to optical images into electronic data camera. Divided according to use: SLR camera, card camera, telephoto cameras, cameras and home.
      Digital cameras, is a use of electronic sensors to optical images into electronic data camera. hidden spy cameras and ordinary camera on film by chemical changes of silver bromide to record images of the principle of different digital camera sensor is a light-sensing charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS). In the image transmission to a computer before will usually stored in digital storage devices (usually using the flash memory; floppy disk and can repeat the rewritable compact disc (CD-RW) has been rarely used in digital cameras and equipment). Today, digital spy camera more portable design, which produced a mini spy camera, hidden spy camera and so on.
      Digital camera is a optical, mechanical, electronic integrated products. It integrates image information conversion, storage and transmission components, with digital access mode, and computer interactive processing and real-time shooting and so on. Digital camera is a spy video camera, digital cameras first appeared in the United States, 20 years ago, the United States has used its transmission to the ground via satellite photos, and later converted to civilian use of digital photography and constantly expanding range of applications. Please visit TradeTang.com.

Introduction PS2       PlayStation 2, abbreviated PS2, the Japanese sony (Sony) a unit of Sony Computer Entertainment SCEI (Sony Computer Entertainment Inc.), On March 4, 2000 launch of home-based 128-bit game console, the Japanese launched the same day caused panic buying ps2 games fever, and in 2004 launched a global version of the PS2 slim console (known as PlayStation Two, relative to the MINI version of PS - PlayStation One is), to July 8, 2008 date has sold more than 1 in the world 100 000 000 2 million units.
      PS / 2 computers in an earlier one common interface for mouse, keyboard and other equipment. Under normal circumstances, wholesale video games in the PS / 2 mouse interface, green, purple keyboard, other interfaces can also connect several peripherals such as steering wheel, light gun. PS / 2 interface is the input device interface, rather than the transmission interface. Therefore, there is no PS2 port the concept of transmission rate, only scan rate. In the Windows environment, ps / 2 mouse sampling rate defaults to 60 times / sec, USB mouse sampling rate of 120 times / sec. Theoretically, a higher sampling rate can improve the precision of mouse movement. PS / 2 interface device does not support hot swap, hot plug may be destroyed by force board. PS / 2 with USB Interface Mutual Convert, or PS / 2 interface device can be transformed into a USB, USB interface device can also be converted to PS / 2. Please visit TradeTang.com.

U.S. spy camera       Sarnoff video technology company that introduced a can be installed in mobile phones, security and automatic devices miniature digital camera. The company said this is only 3 cm long and wide, only 2.3 cm in low-power miniature video cameras will allow mobile users to send and receive phone calls while simultaneously the resolution can be comparable with the movie film images and video images. Sarnoff Corporation, said, hidden spy cameras are based on the U.S. government to develop a miniature spy camera requires the development of this camera, the U.S. government hoped that the camera can be used for spying activities. To this end, hidden spy camera This camera allows users to carry and extremely difficult to find by other people, and it can be within a very short time to conduct photographic processing, tuning the focal length, and location to adapt to different light levels , capture high quality images possible.
      With the current increasing popularity of broadband Internet access technology, use of network within the next few years, transfer pictures and video images will be increasing demand, so this camera spy video camera will be very widely used. Of course, in the field of surveillance tracking, the use of this camera will be its head. For example, car manufacturers are hoping to install the cab in the car video camera, because it can always monitor the driver's driving actions, and, where necessary, start the airbag, so as to ensure the safety of the driver. Many automobile manufacturers have expressed the hope that by 2006 this camera will be installed on every car they produce them. Sarnoff said, mini spy camera technology used in display, low power consumption of the camera can shoot under the same high precision images, even in the shooting scene where lighting changes constantly as well. The researchers said the camera pixel sensors in the dynamic range of an ordinary camera shooting 100 times, and it makes the camera can be within 0.1 seconds of time to capture images, and general camera to capture at least 2 seconds. It is worth mentioning that, digital spy camera is only 600 mW of power, so power consumption is only one-fifth of similar products. Please visit TradeTang.com.