語言串理論 的英文怎麼說
中文拼音 [yǔyánchuànlǐlún]
語言串理論
英文
linguistics string theory-
This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply
論文首先從虛擬儀器的技術內涵出發，深入研究和討論了通用串列總線usb規范及工作原理，並依據usb1 . 1規范，採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件，實現了通用計算機與測試設備之間基於usb總線的通信功能；其次，在所開發的usb總線介面的基礎上，使用微處理器pic16c62和多路繼電器開關，設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件；再次，採用vb語言編程，調用windows內部api函數，與選定hid類驅動程序進行通信，實現usb總線介面測試儀器功能，完成面向測試的上層軟體開發；最後，在深入研究印刷電路板測試方法的基礎上，利用已開發的多路通道掃描器和面向測試軟體，結合必要測試儀器組建印刷電路板測試系統，並對測試結果進行了簡要的誤差分析。First this chapter analyses the function of modem in theory, as well as communication principle of computer and modem. second designs program of serial communication using mscomm of vb 6. 0, by reason that mapbasic is the second development tool of mapinfo and a programmable language of developing map information applications, it is unable to directly read datas of serial port used by modem, unless by means of external program. finally using dde technology completes transmitting real - time orientation data between mapinfo and serial communication program of vb
本章首先從理論上分析了modem功能及與計算機的通信原理；其次利用v86 . 0的通信控制項mscomm開發串列程序，由於mapbasic是mapinfo二次開發工具，是一種編制地圖信息應用程序的編程語言，不能直接讀取串列通訊埠數據，它必基於gsm網和pstn網的移動終端和遠程主機的實時數據通信系統的技術研究須藉助外部程序來完成與modem的串列通訊；最後利用ode技術來實現maplnfo與vb串列通信程序實時定位數據傳輸。Text is a kind of very common resource in digital library, and lossless techniques play an important role in compressing text. starting from the shannon ' s entropy theory, we analyze the lossless compression algorithms, and implement arithmetic coding algorithm in c. in the experiments, we compare four different lossless compression algorithms by their performances such as compression rate, compression rate tendency with the length of data, stability, and complexity, using 35 groups data series with 4 different length
本文從信息論中shannon熵定理出發，對無損壓縮技術進行系統地分析，用c語言實現了其中的算術編碼演算法，並用它對35組、四種不同長度數據序列進行了壓縮，給出了實驗結果，然後從壓縮比、壓縮比隨字元串長度的變換趨勢、演算法穩定性和演算法復雜性等四個方面對其與其它三種壓縮演算法lzw 、 lz77 、 rle進行了分析與比較。2. go into one question in particular, that is the design of monitor software. through the c51 language, it makes many functions come true, including the distinction of the keycode, indication of lcd screen, dispose of the input - and - output data, management of the interface like serial port and i2c bus, and make a development on firmware which confirm to the standard hid - usb class
2 .著重討論了監控軟體的設計，通過單片機c51語言，實現了包括鍵碼識別、液晶屏顯示，輸入輸出數據處理、串口與i2c介面管理在內的功能，並進行了符合hid - usb群組規范的固件開發。分享友人