cs50 2019

held on topics, well-known scientists, economists, and heads of famous enterprises from home and abroad delivered 5074 speeches, and held 205 economic and trade talks involving domestic and foreign investment cooperation, technical trade, and key urban development projects, more than 0.11 million Chinese and foreign businessmen have signed contracts, agreements, and intentions, totaling 5208 RMB. The successful holding of the Expo provided a practical link to promote integration of industry, un

2019 Korea international fishing tackle Exhibition Time: October 22, March 1-3, 2019 location: Busan township International Expo Center, South Korea [Exhibition Introduction]The one-year Korean Fishing Tackle fair is a fishing gear exhibition in South Korea. The exhibition received strong support from local fisheries organizations and associations to demonstrate new products and new development trends in t

2019 Italian (vicincha) fishing gear and boat Exhibition Time: October 22, February 23-25, 2019 location: viinica International Expo Center, ItalyIntroductionThe annual viqincha fishing gear and boat exhibition will be held in viqincha. The exhibition will be held jointly by fishing gear supplies and boats, covering fishing equipment, electronic equipment, boats, etc. During the same period, phishing perfo

definition header file (*.h)Template Class a{Class Body}；In a class implementation (*.CPP), each member function is written like thisTemplate return value Afunction body}② to define a friend function in a template class It's also a function of defining template functions.It is important to note that the definition of the template friend function in the (*.h) header file should beTemplate friend return value function name (formal parameter list );The template friend class in the (*.cpp) file is

Recently, it has been reported that the poor yield of TSMC 10nm chip may have a greater impact on the launch of more than 2017 high-end mobile devices, including, naturally, the next generation of IPhone and IPAD models. However, TSMC formally dismissed the claim, suggesting that the 10 nano-processor production was done exactly as planned, without any lag, and that the processor would start to profit in the first quarter of next year.TSMC also released another blockbuster message. TSMC also sai

20165230 2018-2019-1 "Information Security system Design Fundamentals" The second week study summary of learning Contents There are two general rules for arranging the bytes of an object: The small-end method (least significant byte at the front) and the big-endian (the most significant byte in front). The expression x>>k will shift the X arithmetic right to K (the left side complements the K-effective bit) and the x>>>k will make a logical (lef

2018-2019-1 20165334 "Fundamentals of Information Security system Design" Third week study summary and Buffer Overflow Vulnerability experiment One, instruction learning gcc -Og -o xxx.c learns to -Og tell the compiler to use an optimization level that generates machine code that conforms to the overall structure of the original C language code. gcc -Og -S xxx.cLearning ( -S option to view compiled code generated by the C language compiler) gcc -Og -c

2018-2019-1 20165230 "Fundamentals of Information Security system design" The third week study summary of learning Contents The actual implementation of the memory system is to combine multiple hardware memory and operating system software. How valid addresses are calculatedImm(Eb,Ei,s) = Imm + R[Eb] + R[Ei]*s ISA: Instruction set architecture, which defines the state of the processor, the format of the instruction, and the effect of

20172322 2018-2019-1 October 19 class test reportProgram: Program design and data structureClass: 1723Name: Zhang HaoStudy No.: 20172322Lab Teacher: Wang Zhiqiang teacherTest Date: October 19, 2018Compulsory/elective: compulsorySupplementary exercises the original questionThe number you want to find is in the initial order of 11,78,10,1,3,2,4,21Problems with homework submitted in class The binary Lookup section of the ASL is calculated incorr

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 4th Week Study summary-Textbook learning content Summary Programmer-Visible state: Each instruction in the Y86-64 program reads or modifies portions of the processor state, which is known as the programmer's visible state. Includes: program register, condition code, program status, program counter, and memory. Y86-64 directive: The y86-64 instruction is a subset of th

2018-2019-1 "Information Security system design basics" x-week study summary of learning ContentsSummarize what you learned this week as simple as possible.Try not to transcription, waste timeRead it, do not understand, learn to remember the experienceProblems in teaching materials learning and the solving process(a template: I read this paragraph of text (quoted text), there is this problem (ask questions). I checked the information, there are these

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 3rd week Study summary-Textbook learning content Summary Program code: The GCC command invokes a complete set of programs to convert the source code into an executable file.First, the C preprocessor expands the source code;Second, the compiler produces the source file assembly code;The assembler then converts the assembly code into a binary target code file;Finally, the l

2018-2019-1 20189221 Book fast reading 1th Week "in-depth understanding of computer systems" The 1th chapter:How to understand Amdahl law? The 2nd Chapter:How do you get code to run on a machine of any word length, and how to port code between different machines? The 3rd chapter:How do C + + and Java compilers map to generate machine-level programs? The 4th chapter:How does a pipelined processor perform basic exception ha

2018-2019-1 20165336 "Information Security System Design Basics" week 5th Study Summary 1. learned knowledge points SRAM and DRAM are both easy to lose, but they have different structures, different speeds, and faster access speed. The prom can only be programmed once. Programs stored in ROM devices are usually called firmware. The EEPROM can erase the information on the chip with a specific voltage without ultraviolet radiation or re

20172324 2018-2019-1 "program design and data structure" Fourth Week study summaryCollection of summary list of learning contents of textbooks List Description Ordered list Its elements are sorted according to some intrinsic characteristics of the element Unordered list The elements do not have an intrinsic order, and the elements are sorted according to their position in the list (d

Asked, I created 000 mega in AD and joined the management group, but the landing Win7 was not working.ForLanding Win7, to be a problem, re-activate the record again, the results are consistentLanding Win10, everything's fine.If you are a user, you will be prompted to be free of administrative privileges.1, whether this is a bug, I do not know.2. If you have a plan to upgrade Windows Server 2019, please test it.3, or directly upgrade the following comp

It can be said that in the past few years, the two-level construction division is very hot, but the pass rate is very low, then we want to pass the 2019 exam through the two-level Construction qualification certificate, first of all, the title of the test network to prepare a few on the home 2019 Level Two builder preparation information, to share with you. First of all, we need to know that our two-level c

20172313 2018-2019-1 "program design and data Structure" the fourth week study summary textbook study summary List Collection Ordered list: its elements are sorted by an intrinsic characteristic of the element. (an element in a sequence table has an intrinsic association that defines the order of elements) unordered list: The elements do not have an intrinsic order between them, and the elements are sorted by their position i

20172327 2018-2019-1 "program design and data structure" Fifth week study summary textbook Study content summary nineth Chapter sort and find Find 1. Find: Find the specified element in a project group or determine whether it exists. The project group is called a lookup pool.2. Common Find method, linear find.3. Find the goal: efficiently complete the search, with minimal comparison operations. Finding the number of items in

20172333 2018-2019-1 "program design and data structure" Fourth week study summary textbook Learning content summary 6.1 list collection The list collection has no intrinsic capacity size and grows as needed List collections can add and remove elements at the middle and end, except that queues and stacks can only be added and deleted at the end. List collections are divided into three categories: ordered, unordered, indexed There