Receive ECC digital currency
Publish: 2021-04-14 12:43:08
1. 1. Mainstream currency, generally this kind of digital currency has been widely recognized by the market. In the process of implementation, it is strictly based on blockchain technology, but it has been used in practice. BTC and eth, which have good market liquidity, are mainstream currencies
2. Shanzhai coin is called Shanzhai coin because it has many similarities with mainstream coin in technical mode. Shanzhai coin also has its own real project, which is based on the underlying technology of blockchain and is implemented according to the plan of its white paper. The common counterfeit coins are EOS and BTM
3. Generally speaking, there is only one white paper that looks very strong. However, in the actual development, there may not be any procts or business landing. People just want to make money. However, the current laws and regulations have no way to take it, using formal means to achieve the goal of money. Hero chain, superstar, space chain and so on Welcome to the previous articles of chain horse: it has dropped from 2.6 yuan to 0.1449 yuan, breaking 18 times in six months, and the routine of air currency can't be prevented)
4. MLM currency, in the name of blockchain, has nothing to do with blockchain. The currency he issued can't be found on the Internet, and it's completely internal control. Usually, people will build their own trading platform, and then the K-line of the coin will always rise, telling investors that our future value will exceed bitcoin.
2. Shanzhai coin is called Shanzhai coin because it has many similarities with mainstream coin in technical mode. Shanzhai coin also has its own real project, which is based on the underlying technology of blockchain and is implemented according to the plan of its white paper. The common counterfeit coins are EOS and BTM
3. Generally speaking, there is only one white paper that looks very strong. However, in the actual development, there may not be any procts or business landing. People just want to make money. However, the current laws and regulations have no way to take it, using formal means to achieve the goal of money. Hero chain, superstar, space chain and so on Welcome to the previous articles of chain horse: it has dropped from 2.6 yuan to 0.1449 yuan, breaking 18 times in six months, and the routine of air currency can't be prevented)
4. MLM currency, in the name of blockchain, has nothing to do with blockchain. The currency he issued can't be found on the Internet, and it's completely internal control. Usually, people will build their own trading platform, and then the K-line of the coin will always rise, telling investors that our future value will exceed bitcoin.
2. During the free period of high-speed, etc has been set up. Passenger cars with less than seven seats (including seven seats) can get on the high-speed from etc lane, but they still have to go to the exit of etc lane to get off the high-speed, which will not be dected. If you get on the high speed from the etc lane and do not get off the high speed from the etc lane, it may cause the vehicle to be dected by mistake after the toll is resumed.
3. Parity check (ECC) function is a way of high-quality data transmission. When the receiver finds parity check error, it can ask the sender to resend the data to ensure the accuracy of data transmission. The memory with parity check needs one more memory. We usually buy 8 memory moles and 9 memory moles with parity check. The price is high. The home computer generally doesn't need to use it. It can be turned off in CMOS.
4. The full name of ECC is error checking and correction or error correction coding, which is an algorithm for error detection and correction. In BBM in the previous section, we mentioned that bad blocks will be generated in the proction and use of NAND flash. BBM is the management mechanism of bad blocks, and the first prerequisite for effective management of bad blocks is to have reliable bad block detection means. If there is no problem with operation sequence and circuit stability, when NAND flash memory fails, the whole block or page will not be read or even all of them will fail. Instead, only one or several bits of the whole page will fail. At this time, ECC can play a role. Different particles have different basic ECC requirements, and different main controllers support different ECC capabilities. Theoretically, ECC capability is enough
BCH code is the most commonly used ECC code in SSD. When the data is written, the ECC mole inside the controller calculates the data and generates ECC signature. Generally speaking, this step is very fast, so it will not affect the performance of the whole SSD. ECC signatures are generally stored in the SA area at the back of the NAND page. When the data is read from NAND, ECC mole will go back to read the ECC signature and check whether it is the same or not to find the error
it is more complex to fix received data errors than to find them. The first step is to detect whether the received data is wrong, which is as fast as the above operation of generating ECC signature. If the received data contains error bits, we need to generate a unique ECC algorithm (such as BCH), which will cause performance loss, but only when the error is detected. The generated ECC algorithm is used to fix the previously detected errors
it must be emphasized that the ECC decoding process may fail, so the ECC system architecture must be reasonably designed to ensure that ECC does not make errors, and the number of error bits that ECC can repair depends on the ECC algorithm design
If ECC can't correct it, ECC fail will be reported, and the user will show read fail. Sometimes ECC can't even detect an error, which will lead to data error
the stability of NAND needs to be guaranteed in many ways. ECC can only be used to ensure the repair of partial bit errors. If there are large-area errors in the whole page or even block, only rendant protection such as raid can be repaired
in enterprise procts, there are even more stringent requirements for ECC, that is, data integrity check. All internal buses and FIFO data buffers of SSD should be checked to detect data errors before entering NAND.
BCH code is the most commonly used ECC code in SSD. When the data is written, the ECC mole inside the controller calculates the data and generates ECC signature. Generally speaking, this step is very fast, so it will not affect the performance of the whole SSD. ECC signatures are generally stored in the SA area at the back of the NAND page. When the data is read from NAND, ECC mole will go back to read the ECC signature and check whether it is the same or not to find the error
it is more complex to fix received data errors than to find them. The first step is to detect whether the received data is wrong, which is as fast as the above operation of generating ECC signature. If the received data contains error bits, we need to generate a unique ECC algorithm (such as BCH), which will cause performance loss, but only when the error is detected. The generated ECC algorithm is used to fix the previously detected errors
it must be emphasized that the ECC decoding process may fail, so the ECC system architecture must be reasonably designed to ensure that ECC does not make errors, and the number of error bits that ECC can repair depends on the ECC algorithm design
If ECC can't correct it, ECC fail will be reported, and the user will show read fail. Sometimes ECC can't even detect an error, which will lead to data error
the stability of NAND needs to be guaranteed in many ways. ECC can only be used to ensure the repair of partial bit errors. If there are large-area errors in the whole page or even block, only rendant protection such as raid can be repaired
in enterprise procts, there are even more stringent requirements for ECC, that is, data integrity check. All internal buses and FIFO data buffers of SSD should be checked to detect data errors before entering NAND.
5. ECC No.
Pan No.: Permanent Account No.
excite registration number:
excite range number:
excite division number:
excite collate, Tax rate applicable: tax rate application
LST no / vat No:: local sales tax No. (local sales tax registration number) VAT No.
CST No.: central sales tax No.: central sales tax registration number
Pan No.: Permanent Account No.
excite registration number:
excite range number:
excite division number:
excite collate, Tax rate applicable: tax rate application
LST no / vat No:: local sales tax No. (local sales tax registration number) VAT No.
CST No.: central sales tax No.: central sales tax registration number
6. There should be, because
ECC memory
desktop computers can not be used, so
the second-hand market is very narrow, but the quantity is still relatively large, so the price is not high. It's a waste of time to fake again.
ECC memory
desktop computers can not be used, so
the second-hand market is very narrow, but the quantity is still relatively large, so the price is not high. It's a waste of time to fake again.
7. Has the ECC function of the port been turned on? If it doesn't work, I suggest you soft reset the main control board!
8. You are talking about ECC memory, namely error correction memory. In short, it has the function of finding and correcting errors. It is generally used in high-end desktop computers / servers and graphic workstations, which will make the whole computer system more secure and stable at work. The use of ECC check memory will have a great impact on the performance of the system, but this kind of error correction is very important for the server and other applications. The cost of ECC check memory is much more expensive than ordinary memory
Set 1. (4) in the advanced chipset parameter "advanced chipset features":
this option can be adjusted according to the advanced functions provided by chipset to make the system performance fast and stable. The specific settings of chip level parameters in different bios are different. Here we choose Intel's 845d chip to talk about. If you are not familiar with the options here, please set it directly according to the system default value. In the BIOS Setup main screen, move the highlight bar to the "advanced chipset features" option, and then press enter to enter the advanced chip setup screen< (1) DRAM timing selective: the CPU first uses memory, so the memory related settings are fixed. This setting parameter has been tested and confirmed by the manufacturer. It is generally not recommended to change any setting parameter unless abnormal operation occurs. Generally speaking, the common problem of the system is that the memory of different speeds is used together, resulting in uneven memory allocation; In addition, the mixed use of different working voltages will also lead to the system crash. The common problems are that the 200MHz DDR DRAM can not be overclocking to 266MHz, and the CL speed is set incorrectly. Under normal circumstances, there is no need to adjust the setting parameters. The values that can be set are 200MHz and 266MHz. Optimization setting suggestion: please set according to your own memory
(2) DRAM RAS # to CAS # delay:
used to set how many clocks to wait for when the memory receives a CAS signal to start reading / writing data. The shorter the waiting time, the better the overall performance
value that can be set: 2 means waiting for 2 operation cycles; 3 means waiting for 3 operation cycles, which is the default setting
optimization suggestion: keep the system default settings
(3) DRAM RAS # precharge:
If RAS is allowed to charge through insufficient cycles before DRAM refresh, the refresh may fail, and DRAM may lose data as a result, "fast" can provide higher performance, "slow" can provide more stable performance
value that can be set: 2 means waiting for 2 operation cycles; 3 means waiting for 3 operation cycles, which is the default setting
optimization setting suggestion: this function is only effective in the system with synchronous memory installed, and the system default setting can be maintained
(4) DRAM data integrity mode:
this item can set the verification mode of DRAM data
value that can be set: non ECC. ECC verification is not required. This is the default setting; ECC, need ECC verification
optimization setting suggestion: if your DDR has ECC verification function, please select "ECC" option
References: http://..com/question/10411354.html
it is recommended to change the memory directly.
Set 1. (4) in the advanced chipset parameter "advanced chipset features":
this option can be adjusted according to the advanced functions provided by chipset to make the system performance fast and stable. The specific settings of chip level parameters in different bios are different. Here we choose Intel's 845d chip to talk about. If you are not familiar with the options here, please set it directly according to the system default value. In the BIOS Setup main screen, move the highlight bar to the "advanced chipset features" option, and then press enter to enter the advanced chip setup screen< (1) DRAM timing selective: the CPU first uses memory, so the memory related settings are fixed. This setting parameter has been tested and confirmed by the manufacturer. It is generally not recommended to change any setting parameter unless abnormal operation occurs. Generally speaking, the common problem of the system is that the memory of different speeds is used together, resulting in uneven memory allocation; In addition, the mixed use of different working voltages will also lead to the system crash. The common problems are that the 200MHz DDR DRAM can not be overclocking to 266MHz, and the CL speed is set incorrectly. Under normal circumstances, there is no need to adjust the setting parameters. The values that can be set are 200MHz and 266MHz. Optimization setting suggestion: please set according to your own memory
(2) DRAM RAS # to CAS # delay:
used to set how many clocks to wait for when the memory receives a CAS signal to start reading / writing data. The shorter the waiting time, the better the overall performance
value that can be set: 2 means waiting for 2 operation cycles; 3 means waiting for 3 operation cycles, which is the default setting
optimization suggestion: keep the system default settings
(3) DRAM RAS # precharge:
If RAS is allowed to charge through insufficient cycles before DRAM refresh, the refresh may fail, and DRAM may lose data as a result, "fast" can provide higher performance, "slow" can provide more stable performance
value that can be set: 2 means waiting for 2 operation cycles; 3 means waiting for 3 operation cycles, which is the default setting
optimization setting suggestion: this function is only effective in the system with synchronous memory installed, and the system default setting can be maintained
(4) DRAM data integrity mode:
this item can set the verification mode of DRAM data
value that can be set: non ECC. ECC verification is not required. This is the default setting; ECC, need ECC verification
optimization setting suggestion: if your DDR has ECC verification function, please select "ECC" option
References: http://..com/question/10411354.html
it is recommended to change the memory directly.
9. Parity
(ECC) function is a way of high-quality data transmission. When the receiver finds parity error, it can ask the sender to resend the data to ensure the accuracy of data transmission. The memory with parity check needs one more memory. We usually buy 8 chips of
memory moles and 9 chips with parity check. The price is high.
household computers
generally don't use them, just turn them off in CMOS.
(ECC) function is a way of high-quality data transmission. When the receiver finds parity error, it can ask the sender to resend the data to ensure the accuracy of data transmission. The memory with parity check needs one more memory. We usually buy 8 chips of
memory moles and 9 chips with parity check. The price is high.
household computers
generally don't use them, just turn them off in CMOS.
10. Check if the motherboard manual supports ECC verification. For example, the Beiqiao 875 chip can support ECC verification. Generally, it is only supported by the server motherboard. But blow out the verification block on the memory with a wind gun! Can also be installed to the ordinary motherboard! The verification chip and memory particles are parallel. It's like the CPU temperature and fan speed detection chip on the motherboard. If it's broken, the CPU can't work on it. Just dismantle it and throw it away.
if there's anything else you don't understand, here's our website, which has our expert QQ online Q & A, I hope all the friends can contact us and make progress together.
welcome to China computer knowledge learning network http://www.cp5x.com
Part I: Fundamentals of electronic circuits (all video teaching) 19cd, From the beginning to proficient, from the foundation of maintenance to proficient, we can easily master the basic knowledge of the circuit by repeatedly watching the video teaching CD< The second part is about mainboard display card memory, etc.
video teaching 2CD mainboard circuit maintenance and detection, mainboard north-south bridge replacement, optical drive maintenance, TV box maintenance, hard disk circuit board and chip replacement, etc.
mainboard maintenance data 1CD collects basic welding methods of other maintenance departments, Internal chip level maintenance foundation, etc.
motherboard component data 2CD details motherboard chips, etc.
motherboard circuit diagram data 2CD has collected the latest and most complete motherboard circuit drawings, including the circuit drawings of almost all models of motherboards that can be seen
BIOS collection disk 7CD common and out of print motherboard BIOS, Training materials disk 1CD motherboard maintenance detailed instructions and multimeter instructions, etc.
Part III notebook chip level maintenance
maintenance notebook uses tools and software, maintenance notes, maintenance manual, notebook motherboard drawings, password cracking, out of print notebook driver, etc
the fourth part of the hard disk chip level maintenance technology 20CD
hard disk circuit maintenance, physical structure and principle of the hard disk, basic parameters and logical structure, etc., the classification range is relatively complex, for details, please check on the website
the fifth part of peripheral chip level maintenance technology (a total of 24CD)
divided into printer and printer; Scanner maintenance and copier two parts, there are motherboard circuit diagram respectively; For details, please refer to the website
Part 6 display maintenance technology 12CD
display principle and maintenance video teaching 1CD display factory level maintenance information drawing cd-6cd latest display maintenance teaching material 1CD
LCD maintenance information cd-3cd
Part 7 MP3 MP4 U disk maintenance
this material 2CD is trained by Zhongguancun The senior lecturer of this maintenance technology explained the working principle of MP3 MP4 in a comprehensive and systematic video. The circuit diagram of each part of the main control chip flash chip, factory mass proction program, firmware upgrade scheme, maintenance practice, common problems handling method
it needs to be the same model as before... It is suggested that it is the same size... This will be better
if there's anything else you don't understand, here's our website, which has our expert QQ online Q & A, I hope all the friends can contact us and make progress together.
welcome to China computer knowledge learning network http://www.cp5x.com
Part I: Fundamentals of electronic circuits (all video teaching) 19cd, From the beginning to proficient, from the foundation of maintenance to proficient, we can easily master the basic knowledge of the circuit by repeatedly watching the video teaching CD< The second part is about mainboard display card memory, etc.
video teaching 2CD mainboard circuit maintenance and detection, mainboard north-south bridge replacement, optical drive maintenance, TV box maintenance, hard disk circuit board and chip replacement, etc.
mainboard maintenance data 1CD collects basic welding methods of other maintenance departments, Internal chip level maintenance foundation, etc.
motherboard component data 2CD details motherboard chips, etc.
motherboard circuit diagram data 2CD has collected the latest and most complete motherboard circuit drawings, including the circuit drawings of almost all models of motherboards that can be seen
BIOS collection disk 7CD common and out of print motherboard BIOS, Training materials disk 1CD motherboard maintenance detailed instructions and multimeter instructions, etc.
Part III notebook chip level maintenance
maintenance notebook uses tools and software, maintenance notes, maintenance manual, notebook motherboard drawings, password cracking, out of print notebook driver, etc
the fourth part of the hard disk chip level maintenance technology 20CD
hard disk circuit maintenance, physical structure and principle of the hard disk, basic parameters and logical structure, etc., the classification range is relatively complex, for details, please check on the website
the fifth part of peripheral chip level maintenance technology (a total of 24CD)
divided into printer and printer; Scanner maintenance and copier two parts, there are motherboard circuit diagram respectively; For details, please refer to the website
Part 6 display maintenance technology 12CD
display principle and maintenance video teaching 1CD display factory level maintenance information drawing cd-6cd latest display maintenance teaching material 1CD
LCD maintenance information cd-3cd
Part 7 MP3 MP4 U disk maintenance
this material 2CD is trained by Zhongguancun The senior lecturer of this maintenance technology explained the working principle of MP3 MP4 in a comprehensive and systematic video. The circuit diagram of each part of the main control chip flash chip, factory mass proction program, firmware upgrade scheme, maintenance practice, common problems handling method
it needs to be the same model as before... It is suggested that it is the same size... This will be better
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