Computer Principles Coursewares Unit 4
The document introduced arithmetic operations instructions, including addition instructions.(For example, add without carry instruction, add with carry instruction, add 1 instruction), subtract instruction (For example, the subtract instruction without borrow bit, the subtract instruction with borrow bit, the subtract instruction with borrow bit, the subtract one instruction, the complement instruction, the compare instruction), and the instruction format, function, and the influence on the flag bit were described. At the same time, the judgment basis after comparing the signed number with the signed number was given. However, the document was not fully presented, so only this information could be provided. Read more exciting novels for free
Computer Principles
Computer principles covered many aspects: ** 1. Basic operation mode of the computer ** 1. ** The three steps of hardware input, calculation, and output ** - Computer hardware was made up of a large number of integrated circuits (IPs), and the pins of the IPs were used for input and output. The normal operation of a computer required three steps: input, operation, and output. First of all, the computer itself could not generate information and needed external data (input). Second, the computer had to process and calculate the input data (operation), which was its core value. Finally, the processed data had to be displayed (output) so that the user could know the result. These three steps were closely linked and were indispensable. 2. ** The Essence of Software-A Collection of Orders and Data ** - The essence of a program was a collection of instructions and data, and it had nothing to do with the complexity of the program. An instruction was a command that controlled the computer to input, calculate, and output. The data in the program is divided into input data that is the object of instruction execution and output data that is obtained from the result of instruction execution. For example, in a personal computer, the content of an executable program file with the.Exe extension was a list of values. Each value was either an instruction or data. 3. ** The difference between computer processing and human thinking habits ** - The computer used numbers to represent all information, which was different from human thinking habits. For example, humans used "blue" and "red" to describe colors, while computers used numbers. For example,"0,0,255" represented blue, and "255,0,0" represented red. The computer would first convert the text into the corresponding numbers (character codes) before processing. ** 2. Computer structure composition ** 1. ** Internal and External Storage ** - The internal and external memory was a component that realized the memory function. It was used to store the calculation program and various data involved in the calculation. 2. **CPU structure and functions ** - ** Arithmetic Unit **: It is composed of an arithmetic logic unit, ALU, general purpose register, and data temporary register. The program status word register accepts the commands of the controller and performs actions. It is responsible for the processing and processing of data, namely the arithmetic and logic operations of data. - ** Controller **: Composed of program counter PC, instruction register AR, address register AR, data register Dr, instruction translator, etc. It is responsible for analyzing the control information specified by the program, controlling and coordinating input and output operations or memory access. - ** Register Group **: The register function is to store the binary-code. It is composed of flip-flops with storage function. Registers, buffer, and memory were in close proximity to the CPU. The closest to the CPU was the register, then the buffer, and finally the memory. When the CPU operated, it first read the data from the hard disk into the memory, and then read the data that was about to be used into the register. The CPU prioritized reading and writing the register, and then the register exchanged data with the memory. The buffer existed between the register and the memory, because frequently manipulating the same address data in the memory would affect the speed, and the extraction speed from the buffer was much faster than the memory. - ** bus **: It is the common channel for the CPU, memory, input and output devices to transmit information. The components of the host are connected through the bus, and the external devices are connected to the bus through the corresponding interface circuit. ** 3. Concepts related to commands and programs ** 1. ** Command ** - An instruction was the smallest unit of program control for a computer. The collection of all instructions was called the computer's instruction system. 2. ** Program ** - A program is a set of instructions written in a certain language to complete a specific task. ** 4. Concepts related to the finite-state machine ** 1. ** Basic Concepts ** - The finite-state machine (FSM) was also known as the synchronous finite-state machine. All the state jumps were performed under the effect of the clock, and the number of states was limited. Each state represents an event, and going from one event to another is called a state jump or transition. 2. ** Constitution and expression ** - It is composed of a state register group and a combination logic circuit. The state register group has k bits, that is, there are k state register, and the state is encrypted into k bits, which can represent multiple unique states. The input has m bits and the output has n bits. The trigger condition for a state change is the arrival of the rising edge of the Clock signal. According to whether the output is related to the input conditions, it can be divided into Moore state machines (the output of the combination logic only depends on the current state and has nothing to do with the input state) and Mealy-type state machines (the output depends not only on the current state but also on the input state). "A Short History of the Future: Legends of the Intelligent Era" was equally exciting. Everyone was welcome to click and read it!
Basic knowledge of computer principles
The following are some basic knowledge of computer principles: 1. ** Numbering System Conversion **: Including conversion between binaries, octals, decimals, and hex. 2. ** Code representation **: The representation of original code, complement code, complement code, and code shift. 3. ** Number representation **: The representation of fixed-point numbers and floating-point numbers, as well as the addition, multiplication, and division of fixed-point numbers and floating-point numbers. 4. ** logical operations **: And (AND), or (OR), not (NOT) and other logical operations. 5. **CPU related ** - ** Structure and Function **: The full name of CPU is Central Processing Unit, which is the core component of a computer. It was mainly composed of a control unit and an arithmetic logic unit (ALU). In terms of functions, it was composed of four parts: a register, a controller, an arithmetic unit, and a clock. - ** Work flow **: The core work process can be divided into three key stages: extraction, decoding, and execution. That is, the instructions are extracted from the main memory of the system, the actual content of the instructions is deciphered, and then the relevant parts execute the instructions. - ** Registers Type and Function **: Registers can temporarily store instructions, data, and addresses. Registers with different functions include the accumulating register.(Store data after operation and calculation), Flag register (Reflects the processor's state and the characteristics of the operation results, controls the execution of instructions), program counter (stores the address of the unit where the next instruction is located), base register (stores the starting position of the memory where the data is stored), index register (stores the relative address of the base register), general register (stores any data), instruction register (stores the instructions that are being executed, used internally by the CPU, and cannot be read or written by the programmer), stack register (the starting position of the storage stack area), etc. 6. ** Controllers and logic gates ** - ** Transcendence **: An electronic switch that can control the flow of electric current through electrical signals. There were three terminal: collector, transmitter, and base. When a small current was applied to the base, it could act as a conductor to allow the current to pass through. Otherwise, it could act as an insulation to prevent the current from flowing between the collector and the transmitter. - ** logic gate **: It is constructed from a single crystal, such as an AND gate, an OR gate, a NOT gate, an Exclusive OR gate, etc. It is the basis for building more complex circuits. Different logic gates have different input and output rules. For example, an AND gate has an output of 1 if both of its input are 1, and an OR gate has an output of 1 if one of its input is 1. 7. ** Arithmetic logic unit (ALU)**: It is a component inside the CPU that is responsible for performing arithmetic and logic operations. It can recognize and perform specific arithmetic operations through the decode. 8. ** Command identification **: The CPU uses opcode to identify and execute different types of commands. "A Short History of the Future: Legends of the Intelligent Era" was equally exciting. Everyone was welcome to click and read it!
I recommend a classic book on computer principles.
Computer Science Principles was a classic book on computer principles, co-written by Donald Knuth and Oren Patashik. The book introduced in detail the composition of the computer system, working principles, and programming methods, including algorithm analysis, data structure, compiling principles, operating systems, and other aspects. This book is one of the introductory classics of computer science. It is suitable for beginners to read and for readers who have a certain understanding of computer science to further study. At the same time, the book was also a good popular science book that could let readers understand some of the cutting-edge technologies and development trends in computer science.
Computer configuration model and unit price
The following are the models and unit prices of some different computer configuration: - Among the 5000 yuan computer configuration, the AMD-Ryzen 52600 processor was priced at about 1,100 yuan. - In the game configuration with a budget of 3000, there was an i512400F and an RTX2060 graphics card, but the unit price was not given. - For home computers priced between 100 to 300 yuan: - CPU: AMDX4640, price about 3 yuan. - Motherboard: Asus A78, price about 10 yuan. - Memory: Two 4G DDIR3 memory chips form a dual channel. The price is about 20 yuan. - Hard Disk: 120G non-branded solid-state hard disk, price about 30 yuan. - Video card: GT520, price about 30 yuan. - Power supply: 300 Watt rated by Hangjia, priced at about 20 yuan. - [Radiator: Dual copper pipe (free)] - 301 - 500 yuan home computer configuration: - CPU: i5 - 4590, price about 100 yuan. - Motherboard: B85, price about 85 yuan. - Memory: 8GB DIDR3 1600, price about 30 yuan. - Hard Disk: Lightpower Warrior Series (120GB) Solid State Disk, priced at about 99 yuan. - 501 - 700 yuan home computer configuration: - CPU: Intel's PentiumI5 - 6500, priced at about 180 yuan. - Motherboard: Colorful C.H110M solid-state version, priced at about 130 yuan. - Memory: 8GB DIDR32133, Price: 70 yuan. - 701 - 1000 yuan home computer configuration: - CPU: Intel Core i3 - 10105F, price about 320 yuan. - Motherboard: B460, priced at about 180 yuan. - Memory: Two 8GB Ddr4 2666 memory chips form a dual-channel, priced at about 240 yuan. - Hard Drive: The Kingston A400 240GB solid-state hard drive costs about 150 yuan. - Video card: GTX750Ti, priced at about 110 yuan. - In the configuration of the i5 - 12400F with the RX6500ZT, the i5 - 12400F (Scattered) had 6 cores and 12 threads, and the price was about 600 yuan. - In the configuration of the i5 - 12600HF with the RX4060, the i5 - 12600HF (Scattered) had 10 cores and 16 threads, but the price was not given. However, the price had been directly increased to 1300 yuan, and the current price had dropped to 1000 yuan. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Coursewares of the Heart
The lesson on inner voice referred to the study of psychological voices in psychology. These sounds could be produced in people's dreams or in real life. Psychologists could better understand the inner world and emotional state of humans by studying these sounds. These voices can be used in psychotherapy and medication to help people better deal with stress and emotions.
Ppt Coursewares
The following are some examples of content that can be used to create a powerpoint for novel recommendations: - [1,001 Nights]: - [Basic information: A fascinating story, fluent and common language, and wonderful imagination.] It vividly depicted the social life of the Arabian Empire in the Middle Ages. It had been published for more than 200 years and was almost spread all over the world. In ancient China, the Arabian countries were called the "Great Food Country". After the Ming Dynasty, it was renamed the "Tianfang Country". Because of its tradition of telling stories at night, it was translated into "Arabian Nights" by China. - ** Description **: It can be described in six parts: the author's life, character summary, story outline, highlights, work evaluation, and social background. - [The Quiet Don River]: - ** Basic Information **: Written by the Soviet novelist Sholokhov, it described the turbulent life of the Cossacks in the Don region from the First World War to the 1922 Soviet Civil War. Although it was published during the period of the Soviet Union, it did not whitewash the ugly phenomena of loose military discipline and the shooting of prisoners. It showed the humanity of the great era. It was a masterpiece of realism and had enlightening significance for the construction of the team. - ** Description **: It can be divided into six parts: the author's life, character summary, story outline, highlights, work analysis, and social background. - [The World]: - ** Basic Information **: The PowerPoint presentation for reading sharing can be made from five parts: author introduction, content introduction, character introduction, appreciation of works, and influence of works. - ** Old Man Gao **: - ** Basic Information **: Written by the French writer Balzac in 1834. It is the most outstanding work in Human Comedy, which focuses on exposing the money relationship between people in the capitalist world. It was a story about a flour merchant, Old Man Gao, who devoted his love to his two daughters after losing his wife in middle age. However, his daughters lived a dissolute life and spent money like water. - ** Description **: It can be divided into six parts: the author's life, the summary of the characters, the story, the highlights, the analysis of the works, and the social background. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to check the file number on the unit computer
If you want to inquire about the personnel file number, you can search for the national human resources and social protection government service platform through the web page. After clicking to enter, click to log in (you can directly scan the electronic social security card to log in), find the personal service, click on employment and start-up, pull down to find the personnel file management service for trans-provincial mobile personnel, click to enter, collect the relevant Captcha, enter the Captcha click to inquire, you can see the basic information of the file, which may include the file number (if there is). If it was the driver's license file number, one could enter the Ministry of Public Security's Internet traffic safety comprehensive service management platform, choose their city, and then log in. In the driver's license application in the user information management column, the file number could be seen (it is recommended to log in to the unit's computer to check), but the file number could also be seen directly on the driver's license. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Report on the Virus in the Unit's Office Computer
I recommend My Chaotic City. This is a virtual online game novel written by Ling Xu Yue Ying. The main character, Li Hanqiang, was a funny Chaotic City Lord. He had the talent of tower transformation, which allowed him to change Defensive Towers, synthesize new towers, and build Chaotic Cities. There were all kinds of defense towers and functional buildings in the novel, and the plot to resist the monster siege was very interesting. Although the writing style was not sophisticated, the setting was novel. It was a rare tower defense online game. The plots such as " Super Beast Trap Captures Elite Monsters " and " Arrow Tower Mutated into Sword Tower " were very exciting. Moreover, the author was a veteran, so the word count was guaranteed. Although there are some problems with the writing style and the lack of adventure class settings, the overall situation is very suitable for my taste. There was also the online game, Shoot Through the Heavens, an old book written by Lord Long. It was a construction type work that combined the online game, tower defense, data, and other elements very well. The Lord game was written very well, and all kinds of elements were combined to build the territory. The other talent was very creative. Those who were interested in tower defense could take a look. The recommendation index was 4 stars. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Will the computer in the unit be monitored when it is disconnected and reading a novel?
The answer to this question, which involved network security and surveillance, was not absolute. In some cases, the unplugged behavior of the unit's computer may be monitored because some network security devices may detect the detachment of the computer and track it. However, this depended on the settings of the network equipment and the monitoring strategy. In addition, reading a novel itself could also become a target of surveillance because it might involve some sensitive information such as personal passwords, work information, etc. Therefore, regardless of whether the computer was disconnected or not, it might become the target of surveillance. In order to avoid unnecessary trouble, it is recommended to avoid some sensitive operations when using the unit computer and ensure the security settings of the network equipment.
How to scroll down the unit price of the computer form?
If you want to do something similar to drop-down filling in the unit price and calculating the amount in the Excel table, you can do it as follows: 1. Enter any letter first, then enter quantity * unit price (assuming quantity and unit price are the corresponding cell data), and do the same for the next cell; 2. For the third cell, he pressed the button 'Ctrl'+' E 'to fill the remaining cells. 3. He selected the cells, pressed the button 'Ctrl'+' H', replaced the letters with '=', and then clicked 'replace all'. If you want to set a drop-down list of unit prices in a cell, do the following: 1. Choose the cell that you want to set the drop-down menu, click [Data], and then click [Data Verification]-[Data Verification] in the [Data Tools] column, and a dialog box will pop up. 2. In the "Data Verification" dialog box, click "Set" and "Allow" to select "Sequence". In the "Source", you can manually input unit price data (such as 1, 2, 3, etc., each data is separated by commas in the English input method), or you can quote the unit price content list that has been entered in advance (click the red arrow at the back to directly quote). 3. The drop-down menu was completed. He clicked on the cell, and a triangular button appeared at the bottom right corner. He could click to expand the drop-down menu and select the unit price content. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>