mum computer science

Hardware (Hardware)Software (software)Buses (bus)CPU (central processing UNIT,CPU)Control UnitArithmetic/logic unit (arithmetic/logic unit)Bit (bite)BYTE (byte)Encoding Mode (Schema)Memory is also known as Random access memory (random-access Memory,ram)Drives (drive)HDD (hard disk)Universal Serial Line (Universal Serial Bus,usb)USB flash drives (flash drive)Display (monitor)Screen resolution (resolution)Dial-up modem (modulator/demodulator, modulator/demodulator)DSL (digitally subscriber line, d

and 1, the basic theory of hardware design-Boolean algebra, that is, the logic and 0 and 1 of the operation of a digital circuit design theory, people's basic thinking mode and the computer's 0 and 1 operations are interlinked.4. About Chinese characters outside the code, Chinese characters outside the code is not necessarily equal length code, Chinese characters outside the code is not 0,1 encoding, Chinese characters outside the code is used to input Chinese characters into the machine used i

Any calculation problem can be accomplished by performing a series of operations in a specific order. The problem-solving process (procedure) is called an algorithm (algorithm), which includes:1. Action performed (action)2. Sequence of actions performed (order)The following example shows how important it is to correctly specify the order in which operations are performed:Consider the "Sunrise algorithm" for everyone waking up to work in the Morning: (1) getting Up, (2) undressing, (3) bathing, (

I often heard the chief executive say, "If you want to submit a job, data must be good !!』 I believe this sentence involves many people, but is it true? I have been programming for so many years, although I still like data, but I have never used any data in the old saying, I have always been skeptical about the long term. Today, I am going to hear about the structure and presentation of materials in the Information Department.AlgorithmAfter that, I always understand the meaning of this sente

1. Introduction1 What is data compression?Data compression reduces the amount of data sent or stored by partially eliminating the inherent redundancy in the data.Data compression improves the efficiency of data transfer and storage, while protecting the integrity of the database.2 Data compression methodThe data compression method is divided into lossless compression and lossy compression.Lossless compression is suitable for text or programs. lossy compression is suitable for images, video, and

1. IntroductionWhat is a digital system?A digital system (or digital system) defines how a number is represented by a unique symbol.There are two types of digital systems: positional digital systems and non-positional digital systems.2. Position Digital SystemIn a positional digital system, the position that the symbol occupies in a number determines the value it represents.(1) Decimal System① integer② Real numbers(2) binary system① integer② Real numbers(3) Hex system① integer② Real numbers(4) O

, really? Then everyone is on a starting line, why do you get high wages? Even, you do not have anything, just will Baidu, the company with what use you?100,000-line program, say a little more, adhere to 300 lines of code every day, 1 years will be able to achieve. can also buy a few super-useful code snippets, adhere to practice 20 pieces of useful code every day, but also understand the new technology. Learn about other people's development experience, but also familiar with the web developmen

method is to apply the principle of the tree file system to a single file system. The tree file system contains subdirectories and subdirectories. Structured Storage stores the data in a file, which greatly improves the efficiency of disk space usage.5. Structured Data First, there is a structure, and then there is data. For example, the data storage method in a relational database does not change the structure of the orders table in the storage pot. The logical structure of the data is determ

Instruction Set Y86 Instruction Set Operator: addl, subl, andl, and xorl Jump character: JMP, jle, JL, je, JNE, jge, andjg Condition characters: cmovle, cmovl, cmove, cmovne, cmovge, and cmovg Others: Call, pushl, popl, halt Registers % Eax, % ECx, % edX, % EBX, % ESI, % EDI, % ESP, % EBP The stack pointer has % ESP. The address where the PC stores the current command Condition code (Status Code) 1. Normal Command Execution 2. Pending 3. invalid read/write address 4. Invalid Command Instr

+ high)/2.0CTR + =1 assertCtr -,' iteration count exceeded ' Print ' Bi method. Num. Iterations: ', CTR,' Estimate: ', GuessreturnGuess def squarerootnr(x, epsilon): "" " Return y s.t. Y*y is within epsilon of X" " assertEpsilon >0,' Epsilon must is postive, not '+ str (epsilon) x = float (x) guess = x/2.0Guess =0.001diff = Guess * *2-X ctr =1 whileABS (diff) > Epsilon andCtr -:# print ' Error: ', diff, ' Guess: ', guess guess = guess-diff/(2.0*guess)diff = Guess * *2-X ctr +

"This is the answer I wrote:# Your code hereIf Len (aStr) = = 0:Return FalseElif len (aStr) = = 1:if aStr = = Char:Return TrueElseReturn FalseElseif char = = Astr[len (aStr)//2]:Return TrueElif Char Return IsIn (char, Astr[:len (ASTR)//2])else:Return IsIn (char, Astr[len (ASTR)//2+1:])def isIn (char, ASTR): "This is the standard answer: char:a single character Astr:an alphabetized string returns:true if char I s in AStr; False otherwise ' # Base case:if aStr is empty, we do not find the char.

spare time, with the students to discuss and study about the program design aspects, using Java Object-oriented program design method, design student performance management system, log in as Administrator, to achieve the following interface common functions. Paste part of the pictureOnce implemented, the code is compiled and the results are as follows:School of Computer Science of XX University of Shandong-

520 Computer Science and technology520.10 Basic disciplines of computer science and technology520.1010 automata theory 520.1020 computable theory 520.1030 computer reliability theory 520.1040 algorithm theory 520.1050 data structure 520.1060 information security and

decomposition (Cholesky decomposition) can be used. Strukturtensor algorithm--Applies to the field of pattern recognition, to find a calculation method for all pixels, to see if the pixel is in the homogeneous region (homogenous regions), to see if it is an edge, or a vertex. Merge lookup Algorithm (Union-find)-given a set of elements, the algorithm is often used to divide these elements into separate, non-overlapping groups. The data structures of disjoint sets (Disjoint-set) can track suc

backwards and the interval is 2. there ' s one other cool thing you can does with string slicing. You can add a third parameter,k, like this:s[i:j:k]. This gives a slice of the stringsFrom indexiTo indexj-1 , with step size k. Check out the following examples: >>> s = ' Python is fun! ' >>> S[1:12:2] ' Yhni u ' >>> S[1:12:3] ' Yoif ' >>> S[::2] ' Pt

, Numspiders)return(None,None,None) def barnYard1():Heads = Int (Raw_input (' Enter number of heads: ')) legs = Int (Raw_input (' Enter number of legs: ')) pigs, chickens, spiders = solve1 (legs, heads)ifPigs = =None:Print ' There is no solution ' Else:Print ' Number of pigs: ', pigsPrint ' Number of chickens: ', chickensPrint ' Number of spiders: ', spidersImproved: Output all the solutions: def solve2(Numlegs, numheads):Solutionfound =False forNumspidersinchRange0, Numheads +1): forNumc

Assume is s a string of lower case characters.Write A program This prints the longest substring of in s which the letters occur in alphabetical order. For example, if s = ‘azcbobobegghakl‘ , then your program should printLongest substring in alphabetical order Is:begghIn the case of ties, print the first substring. For example, if s = ‘abcbcd‘ , then your program should printLongest substring in alphabetical order IS:ABC# Paste Your code into this boxCount = 1result = S[0]While S:Newcount = 1New

[What I saw in a friend's QQ space is that as for the original source, pure wild cannot be verified !] You cannot afford to hurt your computer !!!!!!I started computer learning six years ago !!!!!!So I set foot on Nima to stay on the road !!!!!!Who told Lao Tzu about computer science !!!!!!Nima roadside beggars are al

Design originally -- Reflection on Frederick P. Brooks, a computer science master)Original Title: the design of design: essays from a computer scientist Author: Frederick p. brooks, Jr. translator: Gao Bo Zhu Lei Wang Haipeng Press: Machinery Industry Press ISBN: 9787111416265 Release Date: April 2013 publication date: 16 open pages: 300 versions: 1-1 category: m

What you have to do for four years in college-those that learn computer science and four years in college Kai-fu Lee mentioned in "the world is different from you" that Google's requirements for undergraduates were: The University has compiled at least 0.1 million program lines in four years; High emotional intelligence, team spirit, and willingness to cooperate with others. We will not talk about emo