Summary of rules for plotting root locus Rule #l The starting points and the End points of the root locus(根轨迹的起点和终点) Rule #2 The Segments of the Root Locus on the Real axis(实轴上的根轨迹)
Codes in binary system BCD codes: for decimal digit Gray code: for numbers in binary system; AsCIi code: for characters ey point Use n bits. we can make 2n different words: To make n code-words. you must use logn bits
string is composed ofn(20) characters in an orderly sequence recorded as s:“c1C2C3…Cn” S is string name c123n is value is a character n is string length Such as,S=“ TSinghua University