Set computing power

1.

I believe many people have heard of bitcoin, and it is widely spread that mining suddenly became rich, which makes more and more people want to participate. However, the cost of professional mining machinery is high, which turns many people away. However, the CEC of home chain just released in China recently gives us hope, because of the optimization of the core algorithm, This enables ordinary home computers to participate in mining, but many people have never done so. Today, I'd like to share with you how to use ordinary computers to get CEC

What is the CEC of Jiashang chain

CEC has the characteristics of decentralization, fast transfer time and fast synchronization. At the same time, combined with the consortium, CEC has value. It has a blockchain browser and is open and transparent, which is worthy of your trust and long-term holding. The total amount of CEC is 1.1 billion, with initial issuance of 30 million and lockup of 10 million, which is equivalent to the initial circulation of only 20 million, and the remaining 70 million is mining income, which is divided into 15 years. In order to ensure the quantity, CEC will destroy 1-5 million RMB every year after the circulation of CCEC reaches 50 million RMB. The quantity of destruction is the quantity of lock in and buy back. You may have missed the chance to mine bitcoin with ordinary computers, but today you still have the chance, because CEC is coming

2. http://ke..com/link?url=_DSeTt3Rk_6ButSzUd-zi8T-arSVDWSN95rT36dccKfFMlk9yq
这是与门简介，通俗易懂

3. It depends on what minicomputer it is and its configuration

I have contacted 570595780 and other IBM minicomputers, and their performance has been greatly improved< At present, I mainly use 780 small computers, which are power7 + processors.

if we say flops
the previous generation of power7, an 8-core power7 4.1G is 264.96 gflops. Second kill Intel Core i7-980 Xe (107g)
while 7 + is more than 25% higher than 7. My configuration is 3.72g with a lower main frequency, and the performance is estimated to be similar to 4.1G of the next generation 7.

a fully equipped 780 minicomputer has 16 8-core CPUs, with a total of 4225gflops

4. In the process of using XP, the running speed of the system will become slower and slower with the passage of time. Some friends may think of reloading the system, but after reloading, the common application software also needs to be re installed, which may be more troublesome. How to speed up XP without re installing the system

as long as you operate according to the following nine aspects, I believe your XP will run at a high speed again

first, speed up the startup and shutdown speed

in Windows XP, the system will send a message to the running program and remote server to tell them that the system needs to shut down, and wait for the response before the system starts to shut down. To speed up the startup speed, you can set the auto end task first

1. Find HKEY first_ CURRENT_ Set the key value of autoendtasks to 1 in UserControl panel desktop

2. Next, there is a "hungapptimeout" under the branch. Change its value to "4000 (or less), and the default value is 50000

3. Finally, find HKEY_ LOCAL_， Similarly, set waittokillservicetimeout to "4000"; Through this setting, the shutdown speed is much faster< Second, improve the speed of broadband

professional version of Windows XP retains 20% of the bandwidth by default, which actually has no effect on our indivial users. In particular, it is better to make full use of it

enter gpedit.msc in "start → run" to open the Group Policy Editor. Find "computer configuration → management template → network → QoS packet scheler", select "limit reserved bandwidth" on the right, select "properties" to open the limit reserved bandwidth Properties dialog box, select "enable", and change the original "20" to "0", thus releasing the reserved bandwidth< When using Windows XP network neighborhood, the system will search its own shared directory, printers that can be used as network share, scheled tasks and network related scheled tasks, and then display them. Obviously, the speed will be much slower. If these functions are of little use to us, we can delete them. Find HKEY in the registry editor_ LOCAL_ ， Delete the (printer) and {d6277990-4c6a-11cf8d87-00aa0060f5bf} (scheled task), restart the computer, visit the Internet neighbor again, you will find that it is much faster< Fourth, speed up the startup speed

to speed up the startup speed of Windows XP. You can achieve this goal by modifying the registry. In the registry editor, find HKEY_ LOCAL_ Managermemory managementprefetchparameters, find the enable prefetcher primary key on the right, and change its default value of 3 to 1. In this way, the scrolling time of the scroll bar will be reced< Some times, XP will prompt you to stop responding. It's very annoying. By modifying the registry, we can let it close by itself. In HKEY_ CURRENT_ Change the value of the character key value of autoendtasks to 1 in the user control panel desktop, and then log off or start again< In order to speed up the display speed of the menu, we can set it according to the following methods: we can set it in HKEY_ CURRENT_ Find the "menusholdelay" primary key under the user control panel desktop and change its value to "0" to speed up the menu display< 7. Clear the unused DLL files in the memory_ LOCAL_， Add an item alwaysunloaddll in Explorer. The default value is set to 1. Note: if the default value is set to 0, the function will be disabled< 8. Speed up the pre reading ability and improve the startup speed

Windows XP pre reading setting can improve the system speed and speed up the startup speed. The following modification can further make good use of CPU efficiency: HKEY_ LOCAL_ In the window on the right of prefetchparameters, change the numerical data of the enable prefetcher as follows: for example, if the PIII 800MHz CPU is used, it is recommended to change the numerical data to 4 or 5; otherwise, it is recommended to keep the numerical data as the default value, that is, 3< 9. Rece the number of items to be loaded ring startup. Many applications will be added to the system startup group at the time of installation, and the system will run automatically every time. This not only prolongs the startup time, but also consumes the system resources after startup

start the "system configuration utility". The "start" item lists the items and sources loaded when the system starts. Carefully check whether you need it to load automatically. Otherwise, clear the check box before the items. The fewer items loaded, the faster the startup. This item needs to be restarted to take effect< If you want to access the Internet easily and smoothly, do you notice that the available space of your computer system disk is decreasing day by day? Is it like the old monkey king that moves slowly day by day

Yes! In the process of windows installation and use, there will be a lot of junk files, including temporary files (such as *. TMP, *_ MP) log files (. Log), temporary help files (. GID), disk check files (. Chk), temporary backup files (such as *. Old, *. Bak) and other temporary files. Especially if the temporary Internet Files folder of IE is not cleaned up for a period of time, the cache files in it sometimes occupy hundreds of MB of disk space. These LJ files not only waste valuable disk space, but also make the system run slowly. I'm sure you can't stand this!

5.

The problems are as follows:

1, CPU aging

the system software of the computer has been continuously upgraded, and win has gone from 32-bit to 64 bit. As a result, the requirement of CPU is higher and higher. CPU aging, resulting in a high occupancy rate of the computer, can not bring upgraded software

solution: replace the computer with a new one or upgrade the CPU on the motherboard

2, too many disk fragments

when the computer software is installed or unloaded, when the files are installed and unloaded, the data arrangement in the hard disk will be very scattered or intermittent, which makes the computer slow down in the search, resulting in a lot of use of CPU

solution: daily clean up the garbage of the system, and then clean up the disk fragments

3. Too many startup software programs

the computer starts multiple software at the same time, such as opening dozens of browser windows at a time. Every browser window will take up a part of CPU resources

solution: at the same time, do not open too many software programs, and cut off unused software processes in time

< H2 > extended information:

precautions for daily use of computers

1. Do not use computers on bedding

manufacturers of notebook computers use fans, cooling cts, large cooling fins and cooling holes to rece the high temperature when using computers. At the same time, in order to save power and avoid noise, the fan of notebook computer does not run all the time, but will start when the CPU reaches a certain temperature

if the laptop is placed on soft objects (such as beds and sofas), it may block the cooling holes, and then affect the cooling effect of the computer, and then it may rece the operation efficiency of the computer, or even cause a crash

2. Don't use your fingers to click on the screen.

if you click on the LCD of notebook with fingernails or hard objects for a long time, the special coating on it will be damaged, which will have a great impact on the display effect of computer screen. And when using the touchpad, be sure to keep your hands clean to avoid cursor running

when you accidentally stain the computer surface, you can wet a corner of the dry cloth and wipe it lightly. At the same time, you can't use sharp objects to write on the touch panel, and you can't use them under heavy pressure, so as not to damage the computer

3. Don't turn on or off the computer at will

when using the computer, we should keep the correct habit of switching on and off, because the startup of the computer has an important influence on its service life. Because the computer in just power on or power off moment, will bring greater electric shock, this will send interference signal to the host, and then lead to the host can not start or abnormal. Therefore, when the computer starts up, it should first power on the external equipment, and then power on the computer host

4. Do not start the application immediately

when the computer enters the desktop, you should wait about 30 seconds before running various programs. Because when the computer enters the desktop, there are many background programs to start and execute, and the processor load is the largest at this time. Therefore, if users run other desktop programs, it will increase the burden of the processor, and the running speed will become slower, or even no response, which is just the opposite< Do not shut down and restart immediately

short time frequent pulse voltage impact will damage the computer's integrated circuit, will bring serious damage to the keyboard. If the disk (the medium carrying the data storage in the hard disk) does not stop and restart, it is equivalent to re accelerating the hard disk in the deceleration state. If you do this often, the impact is likely to make your hard disk & quot; Wave your sleeve, don't take away a cloud< br />

6. Before we know how CPU works, let's talk about how CPU is proced. The CPU is made of very pure silicon. A CPU chip contains millions of smart transistors. Transistors are chemically etched or photolithographed on a silicon chip the size of a fingernail. Therefore, in this sense, CPU is composed of transistors. In short, transistors are micro electronic switches. They are the cornerstone of building CPU. You can think of a transistor as an electric light switch. They have an operation bit, representing two states: on and off. This on and off is equivalent to the transistor on and off, and these two states just correspond to the basic binary state "0" and "1"! In this way, the computer has the ability to process information

but don't think that the principle of transistors with simple "0" and "1" states is very simple. In fact, their development has been achieved through years of hard research by scientists. Before transistors, computers relied on slow, inefficient vacuum tubes and mechanical switches to process information. Later, researchers put two transistors in a silicon crystal, creating the first integrated circuit, and then the microprocessor

seeing this, you must wonder how transistors use "0" and "1" to execute instructions and process data? In fact, all electronic devices have their own circuits and switches. The flow or disconnection of electrons in the circuit is completely controlled by the switch. If you set the switch to off, the electrons will stop flowing. If you set it to on again, the electrons will continue to flow. The switch between on and off of transistor is only controlled by electronic signal. We can call transistor binary device. In this way, the on state of the transistor is represented by "1", while the off state is represented by "0", which can form the simplest binary number. The special order and pattern of "1" and "0" proced by many transistors can represent different situations, which are defined as letters, numbers, colors and graphics. For example, 1 in decimal is also "1" in binary mode, 2 is "10" in binary mode, 3 is "11", 4 is "100", 5 is "101", 6 is "110", and so on. This constitutes the binary language and data used in computer work. Groups of transistors can be combined to store numerical values, as well as perform logical and numerical operations. With the control of quartz clock, transistor groups perform their functions synchronously like a complex machine<

internal structure of CPU

now we have a general idea of what CPU is responsible for, but which components are responsible for processing data and executing programs< Alu (arithmetic logic unit)
Alu is the core of arithmetic unit. It is a circuit based on full adder, supplemented by shift register and corresponding control logic. Under the action of control signal, it can complete four arithmetic operations of addition, subtraction, multiplication and division and various logic operations. As mentioned just now, this is equivalent to the proction line in the factory, which is responsible for calculating data< In fact, RS (register set or registers)
is the place where data is temporarily stored in CPU, which holds the data waiting to be processed or processed. The CPU needs less time to access registers than memory. The use of registers can rece the number of CPU access to memory, thus improving the CPU speed. However, e to the limitation of chip area and integration, the capacity of register group can not be very large. Register group can be divided into special register and general register. The function of special register is fixed, which stores the corresponding data separately. General purpose registers are widely used and can be specified by programmers. The number of general purpose registers varies from microprocessor to microprocessor

3. Just like the Logistics Distribution Department of a factory, the control unit is the command and control center of the whole CPU, which is composed of instruction register (IR), instruction decoder (ID) and operation controller (0C). It is very important to coordinate the orderly work of the whole computer. According to the user's pre programmed program, it takes out each instruction from the memory in turn, puts it in the instruction register IR, determines what operation should be carried out through instruction decoding (analysis), and then sends the micro operation control signal to the corresponding components according to the determined timing through the operation controller OC. The operation controller OC mainly includes beat pulse generator, control matrix, clock pulse generator, reset circuit, start stop circuit and other control logic

4. Bus (bus)
is like the communication channel between various parts of a factory. Bus is actually a group of wires, a collection of various common signal wires, which is used as the "highway" for all components of the computer to transmit information. The bus directly connected with CPU can be called local bus. It includes data bus dB, address bus AB and control bus CB. The data bus is used to transmit data information; The address bus is used to transmit the address information sent by CPU; Control bus is used to transmit control signal, timing signal and status information<

CPU workflow

the CPU composed of transistors is the core of processing data and executing programs, and its English full name is: central processing unit, or central processing unit. Firstly, the internal structure of CPU can be divided into control unit, logic operation unit and storage unit (including internal bus and buffer). The working principle of CPU is like a factory's processing of procts: the raw materials (program instructions) entering the factory are sent to the proction line (logic operation unit) through the scheling and distribution of the material Distribution Department (control unit), and the finished procts (processed data) are proced and then stored in the warehouse (storage unit), and finally waiting to be sold on the market (for the application program to use). In this process, we notice that the CPU starts the formal work from the control unit, and the intermediate process is to carry out the operation processing through the logic operation unit, and then to the storage unit to represent the end of the work

operation of data and instructions in CPU

we have just introced the components and basic principles of CPU. Now, let's see how data runs in CPU. We know that data flows through the memory from the input device, waiting for CPU processing. The information to be processed is stored by byte, that is, 8-bit binary number or 8-bit as a unit. The information can be data or instructions. Data can be binary characters, numbers or colors, etc. Instructions tell the CPU what to do with the data, such as adding, subtracting, or shifting

we assume that the data in memory is the simplest raw data. First, the instruction pointer will inform the CPU to place the instruction to be executed in the memory. Because each memory unit in memory has a number (called address), the data can be taken out according to these addresses and sent to the control unit through the address bus. The instruction decoder takes the instruction from the instruction register IR and translates it into the form that can be executed by the CPU, and then decides what necessary operations are needed to complete the instruction. It will tell the arithmetic logic unit (ALU) when to calculate, Tell the instruction reader when to get the value, tell the instruction decoder when to translate the instruction, and so on

if the data is sent to the arithmetic logic unit, the data will perform the arithmetic operations and other operations specified in the instruction. When the data is processed, it will return to the register and continue to run through different instructions or send it to the data buffer through DB bus

basically, CPU performs three basic tasks: reading data, processing data and writing data to memory. But in general, an instruction can contain many operations executed in a clear order. The CPU's job is to execute these instructions. After completing an instruction, the CPU's control unit will tell the instruction reader to read the next instruction from the memory to execute. This process repeats itself quickly, executing one instruction after another quickly, procing the results you see on the monitor. It is easy for us to think that while processing so many instructions and data, e to the time difference of data transfer and CPU processing, chaotic processing will certainly occur. In order to ensure that every operation happens on time, the CPU needs a clock, which controls every action executed by the CPU. Clock is like a metronome, it keeps sending out pulses to determine the CPU's pace and processing time, which is known as the nominal speed of CPU, also known as the main frequency. The higher the dominant frequency is, the faster the CPU works

how to improve CPU efficiency

since the main work of CPU is to execute instructions and process data, then efficiency will become the main content of CPU. Therefore, CPU manufacturers also try their best to make CPU process data faster

according to the internal operation structure of CPU, some manufacturers add another arithmetic logic unit (ALU) or set another floating point unit (FPU) to process very large and very small data, which greatly speeds up the speed of data operation

in terms of execution efficiency, some manufacturers improve the execution speed of instructions by pipeline or almost parallel operation. Just now we mentioned that the execution of instructions requires many independent operations, such as fetching instructions and decoding. At first, the CPU must complete the previous instruction before executing the next instruction. Now, the distributed circuits perform their own operations. In other words, when this part of the circuit completed a work, the second work immediately occupied the circuit, which greatly increased the efficiency of execution

in addition, in order to make the connection between instructions more accurate, today's CPU usually uses a variety of prediction methods to control the execution of instructions more efficiently.