题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=192 给你一个长度为n的数组A,有两种操作,操作一:(S x y) 将A[x]的大小置为y,操作二:(M x y) 求A[x], A[x+1] ... A[y］的和 用一个额外的数组tmp存储数组A,然后将 S x y转换为树状数组的 add x y-tmp[x] #…

题意: 线段树的单点修改,区间查询 #include <map> #include <set> #include <list> #include <cmath> #include <queue> #include <stack> #include <cstdio> #include <vector> #include <string> #include <cctype> #include…

看题传送门 Fenwick树的应用~~~ #include <cstdio> #include <cstring> #include<algorithm> using namespace std; const int MAXN=200000+10; int a[MAXN],c[MAXN],n; inline int lowbit(const int &x) { return x&(-x); } void add(int x,int d) { while(…

VSim [a racing-simulator by vell001] This is my first project about Racing. I am a Chinese with bad English, and today is my first time to use English to write a post, Sorry for my bad Engilsh first- I start my project from last year(2013). I am lear…

Linear Actuator - PID Control Introduction This application guide is designed to explain the basics of PID control and how to implement a basic control loop using Phidgets. Once implemented, the control loop will allow the linear actuator to move to…

调节/测量放大电路电路图:PID控制电路图 如图是PlD控制电路,即比例(P).积分(I).微分(D)控制电路. A1构成的比例电路与环路增益有关,调节RP1,可使反相器的增益在0·5一∞范围内变化; A2是积分电路,积分时间常数可在22一426S范围内变化; A3是微分电路,时间常数由Cl(Rl+R(RP3))决定; A4将比例.积分.微分各电路输出倒相后合成为U. Controller Circuit This circuit is the basis of a temperature co…

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en011794 In many applications, a DC/DC Converter is used to produce a regulated voltage or current, derived from an unregulated power supply, or from a battery. Ex…

http://pdfserv.maximintegrated.com/en/an/AN818.pdf http://www.maximintegrated.com/app-notes/index.mvp/id/818 Digital Adjustment of DC-DC Converter Output Voltage in Portable Applications Abstract: This tutorial discusses methods for digitally adjusti…

Digital potentiometers, such as Analog Devices’ AD5160, make excellent digitally controlled voltage dividers in applications in which 8-bit resolution is acceptable. This Design Idea shows how to use a CMOS DAC as a voltage divider in applications re…

Many electronic devices require user input for setting the application properties. Typical input devices include pushbuttons, potentiometers, and touchscreens. To minimize overall project cost, you may have to select low-range microcontrollers, FPGAs…