needed
共 150 篇文章
needed 相关的电子技术资料，包括技术文档、应用笔记、电路设计、代码示例等，共 150 篇文章，持续更新中。
This code hs been taken from of util-linux It was modified that it only has one directory and just
This code hs been taken from of util-linux
It was modified that it only has one directory
and just the needed files
Linux was first released into an unsuspecting world in the summer of 1991. Initially the spare-time
Linux was first released into an unsuspecting world in the summer of 1991. Initially
the spare-time hobby of a Finnish computer scientist by the name of Linus Torvalds,
Linux was at first accessible
Most e-book publishers do not warn their customers about the possible implications of the digital ri
Most e-book publishers do not warn their customers about the possible implications of the digital rights management tied to their products. Generally they claim that digital rights management is meant
The purpose of this document is to define the format of the messages and data being communicated be
The purpose of this document is to define the format of the messages and data being
communicated between microprocessors used in heavy-duty vehicle applications. It is meant to serve as a
guide towa
基于ATmega48的3相无刷电机的控制方法
介绍了采用ATmega48单片机实现三相无刷直流电机控制器的方法。利用Atmega48获得带死区的脉宽调制（PWM）、霍尔传感器的换相处理、正弦驱动信号的产生和电机转速的控制等功能。采用该方法的优点是所需的外围器件少，成本低。
<DL class=en id=eabs>
<DT>Abstract:
<DD> The method of 3-phase brushless DC mot
Finds a (near) optimal solution to the Traveling Salesman Problem (TSP) by setting up a Genetic Algo
Finds a (near) optimal solution to the Traveling Salesman Problem (TSP) by setting up a Genetic Algorithm (GA) to search for the shortest path (least distance needed to travel to each city exactly onc
μC/OS-II Goals Probably the most important goal of μC/OS-II was to make it backward compatible with
μC/OS-II Goals
Probably the most important goal of μC/OS-II was to make it backward compatible with μC/OS (at least from an
application’s standpoint). A μC/OS port might need to be modified to work
手持式高功率电池充电器
<p>
</p>
<div>
As the performance of many handheld devices approachesthat of laptop computers, design complexity also increases.Chief among them is thermal management—how doyou meet incr
按键开关控制器简化系统设计
<p>
</p>
<div>
Handheld designers often grapple with ways to de-bounceand control the on/off pushbutton of portable devices.Traditional de-bounce designs use discrete logic, fl ipflops, resist
PCA9534—带中断的低功耗8位I2C和SMBus IO口
<p>The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel<br />
Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to<br />
enhance the NXP Sem
PCA9555 16bit I2C-bus and SMBu
<P>The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel<BR>Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to<BR>enhance the NXP Semicon
笔记本电脑的功率调节系统
<p>
</p>
<div>
Notebook and palmtop systems need a multiplicity ofregulated voltages developed from a single battery. Smallsize, light weight, and high efficiency are mandatory forcompetitive
PCA9539 PCA9539R 16-bit I2C-bu
<P>The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of General<BR>Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for<BR>I2C-bus/SMBus applications and was d
8-bit IC and SMBus IO Port wit
The CAT9534 is an 8-bit parallel input/output portexpander for I²C and SMBus compatible applications.These I/O expanders provide a simple solution inapplications where additional I/Os are needed:
基于ARM单片机的自动测高测距小车
<p>生活中许多目标的高度和水平距离需要进行测量。目前主要的测量方法，仍以传统的皮尺丈量为主，测量效率不高，有时还很不方便，没有技术成熟的数字式测高测距产品。以基本的数学方法为理论依据，利用遥控小车做为载体，采用角度传感器测量角度、霍尔传感器测量水平距离等，通过单片机LM3S615进行数据计算，实现了对待测目标物体的高度、水平距离等数据的快速、精确和数字式的测量，高度测量精度可达99.06%，水平
PICKIT™ 2 PROGRAMMER-TO-
<P><STRONG>PICKIT™ 2 PROGRAMMER-TO-GO USER GUIDE</STRONG></P>
<P>The PICkit 2 Programmer-To-Go functionality allows a PIC MCU memory image to be downloaded into the PICkit 2 unit for later progr
PCA9536—4位I2C和SMBus IO口产品数据手册
<p>The PCA9536 is an 8-pin CMOS device that provides 4 bits of General Purpose parallel<br />
Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to<br />
enhance the NXP Se
高速数字系统设计下载pdf
高速数字系统设计下载pdf:High-Speed Digital System<BR>Design—A Handbook of<BR>Interconnect Theory and Design<BR>Practices<BR>Stephen H. Hall<BR>Garrett W. Hall<BR>James A. McCall<BR>A Wiley-Interscience Publicat
基于Xilinx FPGA的双输出DC/DC转换器解决方案
<p>
</p>
<div>
Xilinx FPGAs require at least two power supplies: VCCINTfor core circuitry and VCCO for I/O interface. For the latestXilinx FPGAs, including Virtex-II Pro, Virtex-II and Spartan
基于HITAG读写芯片HTRC110的读写设备设计
<p>
Designing read/write device (RWD) units for industrial RF-Identification<br />
applications is strongly facilitated by the NXP Semiconductors HITAG<br />
Reader Chip HTRC110. All needed functio