MID MID: the Mobile Internet Devices, mobile Internet devices. Intel MID concept put forward by the world&#39;s first intel and aigo MID is the launching of a new generation of pocket computers, using the new Intel Menlow platform, equipped with 45-nanometer Atom processor technology. Palm-sized, weighing only 320 grams, is the world&#39;s smallest computer. MID product of four criteria: 1, using intel Atom processor. 2, has a wireless network connection. 3, with the portable battery. 4 Dimension requirements: a. Equipment Size: less than 7.5 inches diagonal (190.5mm) b. Equipment Dimensions: height less than 1.02 inches (26.0mm) c. Screen size: diagonal less than 6.0 inches (152.4mm) aigo MID is the x86 architecture, built-in Bluetooth 2.0, WIFI, GPS navigation, CMDA, support for 3G network access, integrated Office office, great wisdom, stock and other business and entertainment software. All plus full-screen touch keyboard (handwriting). MID is a high-end customers to improve efficiency and meet the demand anytime, anywhere access, with a comfortable, long time to enjoy the fun of the top pocket PC computer. She also a variety of industries can improve efficiency, cost terminal equipment, can completely replace the PDA, laptop and other devices of a variety of industrial applications; and MID is the most comprehensive wireless data connection of computer, so for a variety of Network Terminal application can be achieved with MID pocket computer! Other: MID is short for midi, is its extension. MIDI Music Instrument Digital Interface is the English acronym, translates to &quot;musical instrument digital interface&quot;, that is its true meaning is a different device for signal transmission in the name of the interface. We are now in MIDI music production all rely on this interface in the interface between the transmission of information is also called MIDI information. MIDI was first applied in the electronic synthesizer - a keyboard played with electronic instruments, due to the early electronic synthesizer technical specifications are not uniform, different synthesizers link is difficult, in August 1983, YAMAHA, ROLAND , KAWAI other well-known manufacturers of electronic musical instruments jointly designated a unified musical instrument digital interface specification, which is MIDI1.0 specifications. Since then, a variety of electronic synthesizers and other electronic keyboard instruments have already adopted this uniform standard, so that all types of electronic musical instruments can link up with each other, communicate MIDI information, the formation of a true synthesis of music performance system. As the rapid development of multimedia computer technology, computers and powerful digital signal processing, MIDI allows computers to process information into a logical thing, so now many people have called the computer MIDI music music. In fact, the use of multimedia computer not only can play, create and play MIDI music in real time. MIDI music can even see the view into the music (sheet music or musical notation) to print out and vice versa, can also become a wonderful music notation. Using MIDI for this property, can be used for music education (especially to read musical notation), let students use computers to learn musical knowledge and creative music. [Edit this paragraph] file properties MIDI file is essentially the so-called computer records MIDI information, data, MID file extension is *. mid. It is used with another computer, the sound wave files (*. wav file) What is different? On the surface, two kinds of files can generate sound effects or music, but their nature is completely different. Ordinary sound files (*. wav files) is the computer directly to the analog audio signal through sampling - quantification, without compression, and sound wave into a digital signal corresponding to the MIDI files are not direct sound recording instrument Instead, play musical instruments recorded various information or instructions, as with what instrument, when to press a key, how kind of strength, etc. As for playing the sound, that is by playing audio conversion software, or formed. Therefore, MIDI files are typically much smaller than the sound file, a piece of music, only a dozen or dozens of K K, only about one thousandth of sound files, easy to store and carry. [Edit this section] Analysis MIDI can be understood as a protocol, a standard or a technology, but do not see it as a hardware device. MIDI hardware is of course the media. It will start with the hardware or I start it, MIDI is not first in the computer inside, it is a manufacturer of electronic musical instruments of different types of electronic musical instruments to the &quot;exchange&quot; and produced, as it is used in digital technology, of course, naturally very easy to put up a relationship with the computer. So we talk about MIDI instrument interface, there are three, MIDI OUT, MIDI IN, MIDI THRU. These can be in your home or with a MIDI MIDI electronic keyboard musical instrument (now all have a lot of keyboard MIDI interface) on the find. MIDI OUT is the instrument of data (MIDI messages) to send out; MIDI IN data is received friends; The MIDI THRU Well, the data is received, then pass on to another MIDI instrument or device, can be said that a number of musical instruments connection interface. It can be said, MIDI is described by MIDI instruments play the same sound into 01 010 data output can also be computer software that will be expressed in the binary audio data into 01010 output through the sound card, or receive some 01 010 data processing. Following on this issue to talk about. MIDI (midi) music is a very complex thing, if it is simple, it may not wonderful was. Employing the method, such as already used to describe people read music is beyond, not to mention some of it into a digital signal it. However, there is then a bunch of fools on the number of interest is that we can use the convenient tool allows you to easily describe the complexity of the music, the Chinese were not enough to fool, I have seen in the Chinese MIDI production software also not be regarded as a somewhat professional-style, do not really fool-style. In fact, an idiot is not good when you only have to master music, but also has good experience in software development, we must understand MIDI. Closer to home, take a look at how musicians describe the music of it. Musicians playing the piano, when he pressed keys when sound, Panasonic&#39;s time to stop the sound keys, the sound level can be expressed in figures, press the keys can open and send a flag to represent, of course, vibrato, portamento, the sound intensity, the sound of what my position (which is close to my left ear or right ear pronunciation), and so are a series of complex information can be expressed in figures, as the specific pronunciation handled by the source, and it can be cured in the sound card in (see how you like the sound card), this is not the most complex place, when the sounds of several instruments at the same time, we will have treatment methods, which a channel (Channel) concept, and in a channel where you can use an instrument, one channel can be used in other instruments, will play two channels simultaneously, you can hear two instruments playing, and in a channel within the instrument can also send a few notes, very easy to form a chord was. Usually a standard 16-channel MIDI, GM standard in the first 10 channels are set for percussion. Early MIDI device can accept MIDI signals in addition to outside is no uniform standard, especially in the way sound is arranged in &quot;free-hand&quot;. This means that you finished on Taiwan Chin Music to get another play different types of piano will look completely different, the violin may become trumpet, flute may become guitar, piano may become drum ... ... This is the work of professional musicians, and will not have much impact, after all, they also make a shrub into a finished recording thing, but the exchange between the music lovers, especially multi-media development is extremely detrimental . So well-known Japanese company in 1990 ROLAND develop it calls the standard GS. GS standard products in the early ROLAND MT-32 and CM-32/64 the basis of the provisions of the MIDI devices shall not be less than the maximum Simultaneous 24, drum cymbals and other percussion instruments as a separate arrangement, 128 musical instruments such as a unified arrangement. In several provisions, the most important thing is the unity of this 128 sound arrangement. With this arrangement, as long as standard equipment in support of GS on the production of music, get any one to support the same standard equipment on all normal playback. Standard for GS was originally a big and good, it makes the world of electronic musical instruments have a &quot;full contact&quot; opportunities. However, perhaps because the standard really is too complicated, but may be because many of the MIDI 设备 manufacturers do not want the formation of the dominant world standard ROLAND situation, short last countries in the world of MIDI equipment manufacturers did not completely accept this standard, Instead of making a minor change, she has a GM standard. GM standard full name should be &quot;General MIDI standard, first-class&quot; (General MIDI system Level1), this standard was enacted in 1991, the GS standard based on the arrangement of the main provisions of the sound, while the number and the drum sound of the key bits , while the GS standard sound editing and sound important to select some removed. GM&#39;s sound basically followed the arrangement of the standard GS is only carried out in the name of marginal changes, such as the GS&#39;s Piano 1 Acoustic Grand Piano, etc. was renamed. Although the GM standard, as powerful as GS, but it is after all a universal world standard MIDI instrument arrangement, and are made because it simplifies ROLAND GS standards, also makes more MIDI device manufacturers meet this standard can be created the MIDI device. So just a development of GM standards, to get MIDI manufacturers, particularly the enthusiastic response of multimedia equipment manufacturers. Since then, various MIDI equipment manufacturers have been struck GM&#39;s standard system, MIDI devices to achieve a deeper level than before the exchange, for the coming multimedia era truly ready. MIDI devices for now, GM is the most basic of standards. Another giant YAMAHA MIDI outdone, he certainly hate to see such a low standard required, so in September 1994 YAMAHA put forward their own audio standards - XG. Similarly, GM XG compatible done on the basis of substantial expansion, such as adding a &quot;sound editing&quot; function, so the composer can change the MIDI music in real-time sound of musical instruments; also joined the &quot;sound options&quot; function, in XG sound of each can be superimposed several sound. Therefore, we present the common MIDI standard by the GM, GS, XG, competition between them will continue, of course, means that GS and XG. [Edit this paragraph] History The early eighties, computer music ushered in the first period of real prosperity, but also ushered in a difficult problem, that is, the communication between various electronic musical instruments problem: the manufacturer&#39;s specifications are in accordance with their production of electronic instrument, when you use a manufacturer&#39;s product alone, you also will not have any problems, but when you also use the equipment several companies to form a computer music system, when trouble comes, how do you make a Taiwan and USA E-MU&#39;s sound source sent you to play in Japan ROLAND keyboard is a standard A then? In order to solve the communication problems of electronic musical instruments, in 1982, the International Association for more than a dozen musical instruments maker manufacturers (mainly U.S. and Japanese manufacturers) gathered together and express their views. Sequential Circuits through the American Conference&#39;s David. Smith&#39;s &quot;Universal Synthesizer Interface&quot; program, and renamed the &quot;Musical Instrument Digital Interface,&quot; that is &quot;Musical Instrument Digital Interface&quot; abbreviated as &quot;MIDI&quot;, made public. 1983, MIDI protocol version 1.0 officially enacted. Since then, all commercial electronic musical instruments have appeared in the back of several five-hole of MIDI sockets, instrument no longer exists between the &quot;language barrier&quot;, they are loaded on the same computer with MIDI interface, forming a more prosperous computer music family. In fact, MIDI itself is short for Musical Instrument Digital Interface, which means Musical Instrument Digital Interface. The role of this interface technology is to enable electronic instruments and electronic musical instruments, electronic instruments and computer communication between the adoption of a common communication protocol, this protocol is the nature of the MIDI protocol. For people who engage in the computer, may wish to MIDI understood as a local area network, the various parts of the network through a dedicated serial cable (MIDI cable) connection, and to 31.25 KBPS speed transmission with digital music information. MIDI standards, they began only in the computer&#39;s round of lobbying in the professional attention, but with the constant development of electronic technology, especially in recent years the rapid progress of multimedia technology, MIDI as multimedia is an important part of get fired uproar, almost reached the point of including women and children. But we all have to this interface technology as a synonym for computer music, often &quot;do MIDI&quot;, &quot;play MIDI&quot; argument, so that some orthodox &quot;computer music&quot; and wonder, tears and laughter. Accordingly, we may wish to MIDI classified as &quot;narrow MIDI&quot; and &quot;General MIDI&quot; two concepts mentioned above narrow MIDI is Musical Instrument Digital Interface, and MIDI is we have generalized a conventional term for the whole computer music, so that that the concept will not cause further confusion, it will not allow MIDI to lose its essence the meaning of the word. November 1985, the International Instrument Manufacturers Association announced the &quot;MIDI 1.0 version of the details of the provision&quot; (version 2.0 is still under development), re-defines the controller number. In addition, to ensure the healthy development of MIDI, but also set up a &quot;MIDI Manufacturers Association,&quot; and &quot;Japan MIDI Standards Committee&quot; and other organizations, MIDI standard from the stage into a mature stage of growth. MIDI standard of maturity so that the electronic musical instrument manufacturers are more confident, their brains to think hard to produce an unprecedented enthusiasm all kinds of electronic musical instruments, a keyboard style (synthesizer, master keyboard), string-type control ( MIDI guitar), Percussion-type (drum machine) and even play style (breath control), in addition, there are a wide variety of various source modules (that is, to no keyboard synthesizer) for candidates purchase. [Edit this section] on the MIDI software MIDI by Microsoft and IBM jointly developed the standard audio format for PC. There are many types of MIDI software, there are MIDI player, playing several types of software and creative software. Typically, most of the media player can play MIDI music, such as WINDOWS95 media player (Windows Media Player) can play MIDI, and often is the system&#39;s default player, such player can not use MIDI music adjust the parameters. In addition to other media players, MIDI performance software and creative software can be used as a MIDI player, which plays MIDI music software, you can also choose a different source (wave form) plays way to get the best playback, but also can change the parameters to produce a new MIDI playback, such as changing the playback speed, change the instrument sound (such as the piano music into a violin), down-tuning, most of the software can also display the corresponding MIDI music scores (read music or musical notation) and even the lyrics and other information, you can also print out the music. [Edit this section] mobile Internet devices (Mobile Internet Device) MID is the Mobile Internet Device (mobile Internet devices), the concept was first proposed by the Intel. Laptop computers and cell phones as a new product form between, MID (Mobile Internet Device, mobile Internet devices) is aimed at those who want at any time and any place access to the Internet consumers. Compared with the laptop, it has 4 to 6 inches sizes, consumers can place it in your pocket, even though laptop is toward miniaturization, but 7-inch minimum size of the mobility obviously can not meet demand; and today subject to relatively small cell phone screen and processing power, can not provide the best Internet experience: poor performance, are not compatible, communication instability. Held in Beijing in 2008, the IDF, the Intel UMPC concept was extended, be extended to UMPC / MID (Mobile Internet Devices, mobile Internet devices) two branches. Intel is an idea full of sophisticated equipment, computing environment, including the UMPC, MID (mobile Internet devices). Intel Ultra Mobile Asia-Pacific director, said Huang Chengde, UMPC and MID is not the definition of hardware, specifications and software, is to apply. He said, UMPC is a fully functional stress of small portable computers for mobile business professionals; MID is for the average consumer. Also, Intel and system manufacturers to set up a MID Innovation Alliance, including Asus, BenQ, Compal, Elektrobit, HTC, Inventec and Quanta. In the past few months, these companies have made significant progress Menlow platform, and plans to first half of 2008 products to the market. MID (Mobile Internet Devices), literal translation is, mobile Internet devices, Intel is in April 2007 at the IDF Congress, a new concept, compared with the UMPC, more emphasis on this type of product anywhere, anytime Internet access capability above both the size and weight may be more smaller (recommended screen size from 7-inch UMPC reduced to 4.5 to 6 inches), in calculating the number of performance can be weakened. In addition, from the target customers of view, UMPC is more important for professional applications, industrial users, MID products more against amateur users, consumer users. MID Consumption levels, life of the device Run a more lightweight operating system that can quickly boot, such as Linux. Multimedia player and mobile Internet browsing-based settings. Around 2009 to Moorestown architecture products, is a typical MID MID currently listed are: Patriot P8860 and the Lenovo IdeaPad U8 [Edit this paragraph] Mid function Returns a specified number from a string of characters. Mid (string, start, length) Parameter string String expression, from which return character. If the string contains Null, return Null. Start was extracted character string part of the starting position. If you start more than the number of characters in string, Mid returns a zero-length string (&quot;&quot;)。 Length The number of characters to return. If omitted or length exceeds the number of characters of text (including the character at the start), will return a string in a string from the start to the end of all the characters. Explain To determine the number of characters in string, use the Len function. The following examples use Mid function returns a character string starting from the fourth of six characters: Dim MyVar MyVar = Mid (&quot;VB Script is fun!&quot;, 4, 6) MyVar value of &quot;Script&quot;. Note MidB function and included in the string of bytes of data used together. The parameter is not specified the number of characters, but the number of bytes. MID mainstream Introduction 2013 global mobile network equipment (Mobile Internet Devices, MID) shipments will reach 50 million units, while the Linux operating system market will be dominated. ABI that, MID market will be the first real mobile operating systems are all in the same starting point of the platform, get rid of smart phone market in the historical baggage, so to get most of the Linux operating system market share. MID refers to the so-called mobile phones larger than, smaller than the mini-notebook computers, such as notebooks, can be put into coat pocket multimedia Internet access. According to another market research firm Forward Concepts, definitions, MID should have high-resolution screen, the size range between 4 to 6 inches. The current network equipment for mobile Linux operating system including design of LiMo, Moblin and Maemo, which, LiMo is shared by six mobile communications manufacturers established an open mobile Linux platform, which is Intel&#39;s Moblin Linux open-source program, specializing in mobile network equipment, Netbook, and other embedded devices, Maemo is an open community dominated by Nokia mobile device platforms, the company&#39;s Nokia N810 Internet Tablet on the use of the Maemo. ABI research director Stuart Carlaw said that the support of Nokia, Maemo has entered the mobile network equipment market, while Intel&#39;s Moblin be driven by its close integration with the Atom to enter the market, while LiMo is also active in the market now , compared with Microsoft Windows Mobile, Linux platform, flexibility, customization and cost advantages of Linux are established in the market-oriented. Carlaw analysis, more importantly, Linux operating system capable of providing an integrated platform across different devices, one to cover the mobile network equipment, smart phones and middleware single platform is very attractive indeed. Forward Concepts also think that, Linux will be the main operating system in the field, and estimated shipments of mobile network equipment will be from 2008 to 30.5 million units, growing to 40 million units by 2012, reaching 12 billion U.S. dollars in revenue size. U.S. dollars in revenue size.