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ARM ARM手机MID平板方案详解
ARM核心是主控SOC中的重要部分，系统的日常应用都由ARM核心来完成，因此ARM核心的效能很大程度上跟用户体验有关。ARM公司一般用DMIPS/MHz来标称ARM核心的性能。DMIPS是Dhrystone Million Instructions executed Per Second的缩写，反映核心的整数计算能力。但Dhrystone算法代码本身比较叫，可以完全放到Cache中执行，因此 ...
技术书籍 MAX338/MAX339的英文数据手册
本软件是关于MAX338, MAX339的英文数据手册：MAX338, MAX339   8通道/双4通道、低泄漏、CMOS模拟多路复用器
The MAX338/MAX339 are monolithic, CMOS analog multiplexers (muxes). The 8-channel MAX338 is designed to connect one of eight inputs to a common output by control of a 3-bit binar ...
可编程逻辑 XAPP228 -Virtex器件内的四端口存储器
This application note describes how the existing dual-port block memories in the Spartan™-IIand Virtex™ families can be used as Quad-Port memories. This essentially involves a dataaccess time (halved) versus functionality (doubled) trade-off. The overall bandwidth of the blockmemory in ...
可编程逻辑 XAPP740利用AXI互联设计高性能视频系统
This application note covers the design considerations of a system using the performance
features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The
design focuses on high system throughput through the AXI Interconnect core with F
MAX
 and
area optimizat ...
压缩解压 Computes the permanent of a nonnegative integer matrix. Notes: Compile in C++, "g++ -o permanent per
Computes the permanent of a nonnegative integer matrix. Notes: Compile in C++, "g++ -o permanent permanent.c".
软件设计/软件工程 function y_cum = cum2x (x,y, maxlag, nsamp, overlap, flag) ％CUM2X Cross-covariance ％ y_cum = cum2x
function y_cum = cum2x (x,y, maxlag, nsamp, overlap, flag)
％CUM2X Cross-covariance
％ y_cum = cum2x (x,y,maxlag, samp_seg, overlap, flag)
％ x,y - data vectors/matrices with identical dimensions
％ if x,y are matrices, rather than vectors, columns are
％ assumed to correspond to independent real ...
其他 The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services.
The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services. SEDA has three major goals:
To support massive concurrency, on the order of tens of thousands of clients per node
To exhibit robust performance under wide variations in load and,
To simplify the ...
Delphi控件源码 Delphi and C++ Builder component for direct access to IO ports on Windows 95, Windows 98 and Windows
Delphi and C++ Builder component for direct access to IO ports on Windows 95, Windows 98 and Windows NT/2000. Provides properties for reading and writing bytes, words and doublewords from/to IO ports. New fast block data transfer methods enable to read and write megabytes of data per second.
其他 Input The input contains blocks of 2 lines. The first line contains the number of sticks parts afte
Input
The input contains blocks of 2 lines. The first line contains the number of sticks parts after cutting, there are at most 64 sticks. The second line contains the lengths of those parts separated by the space. The last line of the file contains zero.
Output
The output should contains the small ...
其他书籍 This document provides guidelines for integrating a discrete high speed USB host controller onto a f
This document provides guidelines for integrating a discrete high speed USB host controller onto a fourlayer
desktop motherboard. The material covered can be broken into three main categories: Board design
guidelines, EMI/ESD guidelines and front panel USB guidelines. Section 1.1 Background provides ...