On TSMC Chuangxin digital currency platform
blockchain technology has the following four ways to make money:
1. Hardware and infrastructure. A typical one is mining machinery proction and distribution chain, where you can make money by buying mining machinery and digging
2. The underlying platform of blockchain and common technologies, such as Ethereum and other public chains, and the privacy protocol nucypher, where you can make money by investing in its token, building applications on the chain, and providing services for users
3. Various vertical applications, such as supply chain traceability and Finance Based on blockchain, right confirmation and trading, can be used or invested to make money
Service facilities, such as digital asset exchange and wallet, media procts, etc., you can make money by making your own exchange
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type of blockchain
1. Public blockchain
refers to: any indivial or group in the world can send transactions, and the transactions can be effectively confirmed by the blockchain, Anyone can participate in its consensus process
public blockchain is the earliest and the most widely used blockchain. The virtual digital currencies of bitcoin series are all based on public blockchain, and there is only one corresponding blockchain in the world
2. Consortium block chains: multiple preselected nodes are designated as bookkeepers within a group, and the generation of each block is jointly determined by all preselected nodes (preselected nodes participate in the consensus process), and other access nodes can participate in the transaction
3. Private blockchain
private blockchain: it only uses the general ledger technology of blockchain for bookkeeping. It can be a company or an indivial, and only enjoys the write permission of the blockchain. This chain is not very different from other distributed storage schemes
Mining is the use of bitcoin mining machine, which is used to earn bitcoin
one of the ways to get bitcoin is that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server
bitcoin is a kind of virtual currency. Bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware. Miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by miners, so the competition for mining is very fierce
mining is actually a competition of performance and equipment. The mining machine composed of many graphics cards, even if it's only hd6770, can surpass the single graphics card of most users
and this is not the most terrible. Some mining machines are made up of more such graphics card arrays. When dozens or even hundreds of graphics cards come together, the graphics card itself costs money. Considering the hardware price and other costs, there is a considerable expenditure in mining
bitcoin mining process:
1. To find the ore pool
to start mining, there must be a ore pool with convenient operation and stable output. Its function is to subdivide the data packets for each terminal, and pay the corresponding amount of bitcoin according to the proportion of the data packets calculated by the terminal through precise algorithm
2. Download bitcoin miner (software)
in fact, there are many kinds of this miner, you can go to the official website to download
3. Setting mining software is a green software. After installation, we can set the language first to facilitate further setting. Next, you need to set the server, user name, password, equipment and so on. Generally, the server chooses a better network from BTC guide series, and the user name and password are set by ourselves before
4, bitcoin mining start
when we confirm that all settings are correct, click the "start mining" button to start bitcoin mining, and then the graphics card will soon enter the full speed running state, the temperature and fan speed will increase, you can monitor the state through gpu-z or graphics card driver
1. General wallet
can support different blockchain tokens. For example, anmao wallet supports BTC, BCH, LTC, ETH, etc, dash and erc-20 series
2. Main Chain Wallet
in order to achieve their own goals, each coin must establish its own main chain, so that it can carry out business. After the main chain goes online, it needs to use the project's own wallet. Just like the green apple wallet of GAC coin, it is a wallet dedicated to GAC trading and transaction clearing
3. Exchange wallet
there are also wallets in the exchange. If the player's currency is recharged into the exchange, the corresponding currency will enter the exchange wallet. The exchange wallet is almost the same as the ordinary wallet. You can fill in the corresponding wallet address when transferring and withdrawing cash, and the corresponding wallet address will be generated for different currencies of each exchange
4. Hardware wallet
generally speaking, the wallet is software wallet, which is a PC program or app. As the name suggests, a hardware controlled wallet can be connected to the network when it is used, and can be stored off the network at other times, so as to avoid exposing the wallet to the network space.
Recently, the central bank has made new progress in issuing digital currency. It is understood that the blockchain based digital bill trading platform promoted by the central bank has been successfully tested, the legal digital currency issued by the central bank has been put into trial operation on the platform, and the digital currency Research Institute of the central bank will be officially listed after the Spring Festival. This means that the people's Bank of China will be the first central bank to issue digital currency and carry out real application in the world
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relevant requirements of Executive Standards
executive standards are not only the needs of enterprise proction and operation, but also the requirements of law
The society will develop normally and the fake and shoddy commodities in the market will be extinct only if we all abide by the law and operate in an orderly way. Therefore, only by fully combining the supervision with the service can we achieve the expected goal, and at the same time, we can really establish the image of technical supervision2. The executive standard on goods can be chosen by the enterprise itself, while the administrative organ can only examine whether the enterprise's procts are in compliance with the legal standard, which does not prove that the enterprise's procts must be in compliance with the standard, but the executive standard declared by the enterprise should be chosen when inspecting the procts
1. When 2510g2901a is struck by lightning from the power supply, it is easy to make the power switch and the receiver jump fire, causing more damage to the thick film of the power supply of cpu24c04
2918e2518e is easy to be damaged at the optocoupler, leading to the damage of str6656 and CPU
at2988db was struck by lightning from the high frequency head, which damaged the high frequency head and the middle amplifier
at21266 and other new procts are easy to damage the power switch control part of the transistor dat124c124c1815a1015
the power supply with voltage sensitive components is relatively less damaged after lightning strike, the block and CPU of the high frequency head entering from the high frequency head are more damaged, when lightning strike enters from the power supply, the thick film optocoupler and the connection with the IC bus are more damaged 2. For the lightning strike machine, because the strong current that causes the damage to the machine is generally from the power supply or high frequency head, the first damage is also the two parts of the components, accompanied by the circuit board copper skin burst, and the components burst. Before repair, observe the motherboard to replace the exploded components, and then check the path related to the exploded components through the multimeter. Carry out mine clearance inspection and replace the abnormal components. The components easily damaged by lightning are diodes and triodes, TL431 and various integrated blocks. CPU damage rate is very high, optocoupler, power supply part of the regulator, high frequency head, remote control receiver head is generally easy to damage. Maintenance needs careful inspection, maintenance sequence, generally first repair the power supply, and then repair other faults< (provided by Wang Xiyou, service department of Xining business department) 2. Examples of lightning machine maintenance
1. Three examples of mc44608 power supply maintenance:
1. After lightning strike, the power supply does not vibrate, and the measured mc446081, 3 and 5 pins have no voltage. No abnormality is found in the peripheral components, so it is replaced with new parts. When it comes to D804 (1N4148), the fault is eliminated
L if the machine is not turned on, there will be a squeak in the machine after it is turned off. The measured 140V output is reced to about 30V, and oscillates. The output of other groups are greatly reced. The standby control pin of the computer block can be turned on, and everything is normal. At this time, the standby pin of the computer is at high level, which is just opposite to the normal startup, so the computer block is judged and the fault is eliminated after replacement
l the fault phenomenon is the same as above, the standby pin of the computer is short circuited to the ground, and it can be turned on and everything is normal. At this time, the fault should be concentrated in the computer, standby control interface and load protection. When d836 (1N4001) was replaced by a new tube, the fault was eliminated<
2,
L model: hid29286p
fault phenomenon: three no after lightning stroke
analysis and maintenance: e to the lightning stroke, the TV needs to be carefully checked. First of all, observe the power supply part: it is found that the 3.15a fuse has been broken. After measurement, str6708 has been short circuited, ru3am (d841) has been broken down, c1815 (q842) and c144 (q843) have been damaged, and the optical coupler has been broken down. After replacing the damaged components with genuine ones, disconnect the power supply load and connect it to the fake load 100W 220V incandescent lamp. After power on, it is found that the bulb flashes. The load voltage of the power supply rises to about 80V, and then drops to 0V. At this time, it is suspected that se140 (ic841) has a problem. After replacing with a new component, the voltage is normal and the fault is eliminated
L model; At29189
fault phenomenon: three no after lightning stroke
analysis and maintenance: careful inspection of the circuit board, found that the power part TL431 (ic803), optical lotus root, fuse has been broken. The results show that c144 (q804), c1815 (q803), s8550 (q802) and ru3c (d831) have been broken down. Tda16846 was found to be damaged after comparison with the new proct. After the new proct was replaced, the power supply load was disconnected, and the power supply voltage was normal after adding the false load incandescent bulb. After connecting the circuit, it was found that the red light was on and it could not be turned on for the second time. At this time, it was found that the njw1136l bus was short circuited by checking the load. After replacing it with a new one, the fault was eliminated and everything was normal
L model: 2516b
fault phenomenon: three no after lightning stroke
analysis and maintenance: through visual inspection, it is found that the fuse has been broken, and other abnormalities are not found. It was found that the optical lotus root, D667 (q831), c1815 (q832), c144 (q833) and ru2am (d831) were damaged. After replacing with a new one, turn off the load and add a false load. The power supply of the incandescent lamp is normal, but it cannot be turned on. When the 5V voltage of load power supply is 4.0V, disconnect the circuit and the 5V power supply of memory, and the voltage is still 4.0V. At this time, graally disconnect the relevant pins of 5V power supply, and the voltage is still 4.0V. After disconnecting the key and receiver head, the 4.0V rises to 5V. After measurement, the receiver head is damaged. Replace it with a new one, restore the disconnected circuit, power on and remove the fault (provided by Zhao Yu, service department of Shenyang Branch)
3,
L machine model: at2970i
after lightning strike, it is confirmed that the lightning strike is from the power supply
damaged components: ic841se140, ic842p621, q842c1815, q843c144, c847100n
L machine model: 2980db
after lightning strike, it is confirmed that the lightning is from the power supply
damaged components: ic802p621, q823c1815, q825c1815
L machine model: at29128
after lightning strike, it is confirmed that the lightning is from the power supply
damaged components: q801buz91a, q803c1815, q802s8550, q207d667, r60310om
ic601njm1136l, ic201tda9373, ic8047808
L machine model: at29211
after lightning strike, it is confirmed that the lightning is from the power supply
damaged components: ic801tda44608, ic802p621, q831c1815, q832c1815, q833c144
L machine model: 3416d
after lightning strike, it is confirmed that the lightning is from the power supply
damaged components: ic842p621, ic841se140, q821d1273a, d8237.5v, d843, d844, d872,
c847100n, r8421.5k, r84333kr8484.7om
L machine model: 2975d
do not start the machine after lightning strike. After inspection, it is confirmed that the lightning strike is from the high frequency head
damaged components: tu1019801a, ic201om8838, ic301tda8351, q208c3779, q207c1815,
q2102sk2541, q516a817, x2024.43mhz
L machine model: 2999uz
if the machine is not started after lightning strike, it is confirmed after inspection that the lightning strike is from the high frequency head
damaged components: tu101, ic201tda9380, ic20224c04, ic9014052, ic9024053, q101c3779,
q904c1815, q905c1815, q906c1815, q907c1815, q206c1815, q920c144 Hu Haihui, Yanji Business Department of Changchun Branch, provided)
4,
lat2565 does not start: replace ic801, ic802, ic803
lat2565 does not start: replace 1136
lat21288 does not start: replace fuse, d830, q009 (c1815), Q008 (a1015), q806, q805 (c1959f)
l2575d does not start: replace d801, rectifier bridge, K802,
l2575d does not start: replace ic001 Ic301 (tda8351)
l2977e does not power on: replace ic001, m28v1-s with a04v01
l2918e does not power on: replace m28v1-s, la76832, no image: Q101 (c3779)
l2975d does not power on, field linearity is bad: AV has no image, image flicker, no sound, low sensitivity: q830 (D667), ic002 (24C08), cpum11v1p, tda8959, tda8351, ic701, R201 (10)
l2975e does not power on: replace ic001, m28v1-s with a04v01 ω Thermistor, Q004, Q005, q208 (b779)
lat25s135 no power on / pillow: ic801 (m44608), q830 (d1273), q413 (a1015)
lat25u159 no power on, image flashing, silent, low sensitivity: ic801 (6708a), ic201 (tda9383), ic601 (at5891), tda8945, q827, q823 (c144), q824 (1815), ic841, 7808, ic802, optocoupler, q801, d1273a D809, d801 (FR104) fuse
lat2965 does not start up: receiving head is broken
lat25288 does not start up: replace ic801 (44608), optocoupler, ic101 (8809), q601 (c144)