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kinds

Trees are natural structures for representing certain kinds of hierarchical data. A (rooted) tree co

Trees are natural structures for representing certain kinds of hierarchical data. A (rooted) tree consists of a set of nodes (or vertices) and a set of arcs (or edges).

標簽： hierarchical representing structures natural

上傳時間： 2016-12-22

上傳用戶：siguazgb
all kinds of digital modulation

all kinds of digital modulation

標簽： modulation digital kinds all

上傳時間： 2014-11-10

上傳用戶：牧羊人8920
it s a sorting c code which is using many kinds of sort algorithm

it s a sorting c code which is using many kinds of sort algorithm

標簽： algorithm sorting kinds which

上傳時間： 2014-01-25

上傳用戶：hasan2015
It was very kinds of you...

It was very kinds of you...

標簽： kinds very was you

上傳時間： 2014-01-11

上傳用戶：ddddddos
H.264的參考源碼

·詳細說明：H.264的參考源碼。有很強的研究價值，可以運行于多種操作系統之上。-reference source code of h.264.it is worth studying .it can run many kinds of OS 文件列表: JM ..\bin ..\...\decoder.cfg ..\...\enco

標簽： 264 參考源

上傳時間： 2013-07-18

上傳用戶：pwcsoft
基于CH341A的USB串口通訊設計

為解決當前計算機串行通訊接口只有USB，難以滿足舊型號設備或某些單片機要求RS232通訊的問題，設計出兩款RS232/USB電路。采用CH341A與MAX223集成電路芯片構建標準9線RS232/USB通用接口轉換器，無需編程。采用CH341A與PIC16F877A構建單片機與計算機之間的USB通訊電路，軟件遵循RS232通訊協議，硬件進行電平轉換。實際使用表明，這兩款產品與計算機端Windows 操作系統下的串口應用程序完全兼容，且通訊過程中無握手失敗現象。 Abstract: To solve the problem that current computer serial communication only with USB interface can not satisfy with the old type equipments or MCU to communicate with RS232， two kinds of RS232/USB circuit were designed.CH341A and MAX223 integrated circuit chips were used to create a standard 9-line RS232/USB universal interface convertor without programme. CH341A and PIC16F877A chips were adopted to build the USB communication circuit between computers and MCU. The software follows RS232 communication protocol， and the hardware converts electrical levels. Actual practices indicate that the two manufactures are compatible with serial application program of Windows operation system completely，and get avoid of handshake lost.

標簽： 341A 341 USB CH

上傳時間： 2013-11-03

上傳用戶：siying
基于ARM單片機的自動測高測距小車

生活中許多目標的高度和水平距離需要進行測量。目前主要的測量方法，仍以傳統的皮尺丈量為主，測量效率不高，有時還很不方便，沒有技術成熟的數字式測高測距產品。以基本的數學方法為理論依據，利用遙控小車做為載體，采用角度傳感器測量角度、霍爾傳感器測量水平距離等，通過單片機LM3S615進行數據計算，實現了對待測目標物體的高度、水平距離等數據的快速、精確和數字式的測量，高度測量精度可達99.06%，水平測量精度則可達98.06%。 Abstract: In our lives， the height and horizontal distance of some goals are needed to be measured. Because the currently used methods are still traditional tape-based measuring methods， and the measuring efficiency is low and inconvenient so some kinds of digital and portable measuring methods or instruments are needed. Based on the basic math theory， this paper designed and manufactured a portable， digital and remote controlled measuring mobile small vehicle， which assembled with angle measuring sensor for angle measurement and Hall sensor for horizontal distance measuring. MCU LM3S615 calculated the height and horizontal distance data gotten from these sensors. The measuring process is simple， the measuring results are more accurate and the measuring efficiency is higher than traditional measure instruments. The accuracy of height and distance measurement can reach 99.06% and 98.06%.

標簽： ARM 單片機自動

上傳時間： 2013-10-30

上傳用戶：jackandlee
基于C8051F040的以太網-CAN轉換電路設計

以太網和CAN總線應用廣泛，但由于其通信協議不同，兩種總線器件間無法進行數據通信，因此，設計了基于CP2200與C8051F040的以太網總線與CAN總線接口轉換電路，并給出部分相關硬件電路與軟件設計分析。在保證數據完整和協議可靠的前提下，通過握手協議和簡化的以太網協議，不僅實現了以太網數據與CAN數據的轉發，同時還順利的解決了以太網的高速性與CAN的低速率沖突，以及兩者數據包之間的大小不同的矛盾。 Abstract: In the development of actual application， Ethernet and CAN bus are used very extensively. Owing to its various communication protocols， the communicating between two kinds of bus device can’t be carried out. Therefore， in order to solve this problem， the Ethernet-CAN bus interface circuit based on CP2200 and C8051F040 was designed in this paper， and part of the related hardware circuit and software design analysis were given. On the condition of data’s integrity and protocols’reliability， through the handshaking protocols and the simplified the Ethernet protocol， not only the data switching between CAN and Ethernet was realized， but also the differ in velocity and packet size was solved.

標簽： C8051F040 CAN 以太網轉換

上傳時間： 2013-10-15

上傳用戶：Ants
基于AVR單片機的USB接口設計

以AVR單片機ATmega8和USB接口器件PDIUSBD12為核心，基于標準的USB1.1協議，設計一種通用USB接口模塊，以滿足嵌入式系統中對USB接口的需求。對模塊的硬件電路或單片機固件程序的硬件接口層稍加修改即可用于其他各種微處理器。該模塊可為各種嵌入式系統增加USB接口,實現與USB主機系統通信。 Abstract: Based on AVR microcontroller ATmega8 and USB interface chip PDIUSBD12, a general USB interface module is designed according to USB1.1 protocol for various requirements of embedded systems. Only with few modifications in circuit or hardware abstract layer of firmware, the module can be used on many types of microprocessors. All kinds of embedded systems can realize high speed and stable communication with USB host systems, owing to the facility of this module.

標簽： AVR USB 單片機接口設計

上傳時間： 2014-01-08

上傳用戶：趙云興
基于自編程功能的MCU Bootloader設計

Bootloader是微處理器上電時運行的第一段代碼，它可以通過通信接口實現對微處理器內部應用程序的更新升級，為網絡化嵌入式產品的應用程序升級帶來極大的便利。由于目前沒有統一嵌入式系統的Bootloader。基于NEC 78K0系列單片機自編程原理，設計出一個適用于78K0/Fx2系列單片機的Bootloader，并能夠通過單片機串口在線升級應用程序。 Abstract: Bootloader is the first piece of code executed after microprocessor startup. It makes the embedded product’s firmware update conveniently through communication interface. However， no unified bootloader is available for all kinds of microprocessor products. Based on the principle of self-programming NEC 78K0s’ series， a useful Bootloader which is suitable for 78K0/Fx2s’ series MCU is designed，the design can update the application through serial ports.

標簽： Bootloader MCU 自編程

上傳時間： 2013-10-26

上傳用戶：fang2010

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kinds

Trees are natural structures for representing certain kinds of hierarchical data. A (rooted) tree co

all kinds of digital modulation

it s a sorting c code which is using many kinds of sort algorithm

It was very kinds of you...

H.264的參考源碼

基于CH341A的USB串口通訊設計

基于ARM單片機的自動測高測距小車

基于C8051F040的以太網-CAN轉換電路設計

基于AVR單片機的USB接口設計

基于自編程功能的MCU Bootloader設計