基于單片機(jī)的電子琴機(jī)器音樂播放器的設(shè)計(jì)--開題報(bào)告-在線瀏覽
2025-07-18 12:00本頁面
【正文】 三周 軟件的程序設(shè)計(jì)?！ ? 第十五周 檢查各個(gè)模塊確保無誤?！ ? 第十六周 整理源程序，編寫說明數(shù)和用戶手冊(cè)。 第十八周 畢業(yè)答辯。s to 5039。s invention.As a new instrument, the history of keyboard like a mechanical keyboard instrument had a long way. Now talk about the keyboard this keyboard, it is Lawrence in 1934 by the American Dream Special manufacturing invention Kazakhstan, and now only 50 years of history. The original purpose of the invention it is great to use it to replace the pipe organ (the largest organ is a musical instrument, the lowest sound pipe 10 meters long.) Later in the fifties the Japanese bought the patent and began production of the keyboard, and use it for music education. This keyboard to gradually spread up in the world. Present in our popular flower in two ways: one is vertical with the foot keyboard。s lives, an essential product. Its birth, so that pleasant voice with the stored vector, can be widely disseminated and shared. Now let me introduce the history of the music player.December1877,Edison publicly perform the phonograph, talking machine the birth of the message, and immediately stir the whole world. Public opinion outside of his right as the science of Napoleon , the phonograph has bee a 19th century invention of the most attractive one of the three exciting. In 1898, Denmark, V. Poulsen invented the wire recorder, since then, the hard magnetic material as a carrier, the use of magnetic remanence characteristics of the sound signals recorded in the carrier, with a replay, the tape recorder started recording in the family Popular. With the social development and the advancement of technology, people seek more and more highquality sound. Oldfashioned tape recorder sound simple, pale features, and he gradually be eliminated. Represents a more clear, stereo, more vigorous official CD player sound quality on stage. In 1982, the world39。s appearance, relying on the perfect sound quality, fast search song, easy to carry and other functions, swept the player market 10 years ago. Until the emergence of MP3. Although the September 9, 1995 release of the first realtime software MP3 player Winplay3, has made many people in their personal puter to encode and playback MP3 files on music players age upon us smart, but because of PC and Internet Limited development, MP3, and did not get wide popularity. Until October 2001, Apple introduced the first generation IPOD, MP3 player, will perform to the realm of art and culture. It is not only a huge capacity, operating intelligent, and stylish, once introduced, immediately agreed to a worldwide blitz! Apple were strong, in addition to its strong R amp。s R amp。s top audio manufacturers brand JBL, Harman Kardon, the world39。s high density nonvolatile memory technology manufacturing and industrial 80C51 instruction set and pin patible. Onchip Flash program memory allows insystem programmable, but also for conventional programmer. On a single chip, with 8bit CPU smart and insystem programmable Flash, making AT89S52 for ma
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