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可编程逻辑 扩频通信芯片STEL-2000A的FPGA实现
针对传统集成电路（ASIC）功能固定、升级困难等缺点，利用FPGA实现了扩频通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核实现NCO模块，在下变频模块调用了硬核乘法器并引入CIC滤波器进行低通滤波，给出了DQPSK解调的原理和实现方法，推导出一种简便的引入?仔/4固定相移的实现方法。采用模块化的设计方法使用VHDL语言 ...
接口技术 谈集成电路的通用接口
Abstract: How can an interface change a happy face to a sad face? Engineers have happy faces when an interface works properly.Sad faces indicate failure somewhere. Because interfaces between microprocessors and ICs are simple—even easy—they are oftenignored until interface failure caus ...
Internet/网络编程 Works a client and a server using UDP in asynchronous operation mode to implement the simple daytime
Works a client and a server using UDP in asynchronous operation mode to implement the simple daytime protocol, as described in RFC 867
压缩解压 zlib 1.2.2 is a general purpose data compression library. All the code is thread safe. The data form
zlib 1.2.2 is a general purpose data compression library. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip ...
其他 The code assumes a two-dimensional computational domain with TMz polarization (i.e., non-zero field
The code assumes a two-dimensional computational domain with TMz polarization (i.e., non-zero field Ez, Hx, and Hy). The program is currently written so that the incident field always strikes the lower-left corner of the total-field region first. (If you want a different corner, that should be a fai ...
编译器/解释器 c语言编译器
c语言编译器，跨平台，4.2版本
lcc version 3.x is described in the book "A Retargetable C Compiler:
Design and Implementation" (Addison-Wesley, 1995, ISBN 0-8053-1670-1).
There are significant differences between 3.x and 4.x, most notably in
the intermediate code. For details, see
http://www.research. ...
编译器/解释器 c语言编译器
c语言编译器，3.6版本
lcc version 3.x is described in the book "A Retargetable C Compiler:
Design and Implementation" (Addison-Wesley, 1995, ISBN 0-8053-1670-1).
There are significant differences between 3.x and 4.x, most notably in
the intermediate code. For details, see
http://www.research.microsof ...
操作系统开发 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** RELEASE NOTES *** *** *
*** *** *** *** *** *** *** *** *** *** *** *** ***
*** *** *** *** *** ** RELEASE NOTES *** *** *** *** *****
*** *** *** *** *** *** *** *** *** *** *** *** ***
1) RELEASE NOTES:
--- --- ----
The release notes are now provided in PDF format in the file:
\SOFTWARE\uCOS-II\DOC\RelV251.PDF
2) ...
Internet/网络编程 I. Introduction This code exploits a previously undisclosed vulnerability in the bit string deco
I. Introduction
This code exploits a previously undisclosed vulnerability in the bit string
decoding code in the Microsoft ASN.1 library. This vulnerability is not related
to the bit string vulnerability described in eEye advisory AD20040210-2. Both
vulnerabilities were fixed in the MS04-007 patch. ...
单片机开发 Decoding most of the infrared signals can be easily handled by PIC16C5X microcontrollers. This appl
Decoding most of the infrared signals can be easily
handled by PIC16C5X microcontrollers. This application
note describes how this decoding may be done.
The only mandatory hardware for decoding IR signals
is an infrared receiver. The use of two types is
described here. Both are modular types used of ...