Transformation of Ethereum

2.

bitcoin uses SHA-256 encryption algorithm. When mining, it competes with computing power. In order to improve computing power, bitcoin has gone through four stages: CPU mining, GPU mining, FPGA mining and now ASIC mining machine mining, and the degree of specialization is getting higher and higher

Ethereum uses the ethash encryption algorithm. In the process of mining, it needs to read the memory and store the DAG file. Because the bandwidth of each read memory is limited, and the existing computer technology is difficult to have a qualitative breakthrough in this problem, so no matter how to improve the computing efficiency of the computer, the memory read efficiency will not be greatly improved. Therefore, in a sense, Ethereum's ethash encryption algorithm is ASIC resistant.

different encryption algorithms lead to great differences in mining equipment and computing power between bitcoin and Ethereum

at present, bitcoin mining equipment is mainly ASIC mining machine with a very high degree of specialization. The maximum computing power of a single mining machine is 110t / s, and the scale of computing power of the whole network is more than 120eh / s

the main mining equipment of Ethereum is video card miner, and there are very few specialized ASIC miner. On the one hand, the "ASIC resistance" of Ethereum mining algorithm improves the threshold of developing ASIC miner. On the other hand, after Ethereum is upgraded to 2.0, the consensus mechanism will be transformed into POS, and the miner can not continue mining

compared with the ASIC miner, the graphics card miner has two orders of magnitude difference in computing power. At present, the computing power of mainstream graphics card miner (8 cards) is about 420mh / s, and that of Ethereum is about 230th / s.

from the time dimension of the past two years, bitcoin's computing power of the whole network is growing rapidly, while Ethereum's computing power of the whole network is growing relatively slowly

The ASIC mining machine of

bitcoin is monopolized by several major mining machine manufacturers, and miners can only buy it from the market; Although the graphics card miner of Ethereum is also manufactured by a special miner, the miner can buy accessories from the market and assemble them according to his own demand

3.

Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of information about bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

if such technology wants to be put into application, the biggest problem is the "Impossible Triangle problem"

that is, scalability, decentralization and security cannot be achieved at the same time, and only two of them can be achieved

most of the existing public chain projects in the market are difficult to put into use on a large scale

4. There is no such word, only longicorn, which means longicorn
Cerambycidae is the general name of Cerambycidae in Coleoptera, with chewing mouthparts, long antennae, often longer than the length of the body. There are more than 20000 species in the world. Some species belong to pests, whose larvae live in wood and may cause damage to trees or buildings
longicorn is a kind of herbivorous insects, which can harm woody plants, such as pine, cypress, willow, elm, walnut, orange, apple, peach and tea, some cotton, wheat, corn, sorghum, sugarcane and hemp, and a few wood, buildings, houses and furniture. It is the main pest in forestry proction, cultivation and construction wood
there are about 40000 species of Cerambycidae beetles in Coleoptera. Their common English names are derived from the very long antennae of most species. It is distributed all over the world, but most in the tropics. The length is 0.4-18cm, but if the antennae are included, the length can be increased by 2-3 times. Many alts (e.g. clytus arietes) collect pollen. They are yellow, black and orange, and resemble wasps; Some tropical species of the genus clytus are ant like; The African beetle (pterognatha gigas) is like a piece of moss or lichen with several lines (protruding antennae)
the larva of longicorn beetle is light yellow or white, and the alt of longicorn beetle has a long cylindrical shape. The front end expands into a round shape and looks like a head, so it is commonly known as the round head borer. It has a strong palate and can live in trees for more than two years, destroying wood. Before pupation, a hole is drilled outward to pupate in the tree, through which newly emerged alts emerge. Three pairs of feet, two pairs of wings. Because of this habit, longicorn damages wood and pulp trees, landscape trees, fruit trees and woody ornamental plants
the alt is a long cylinder with a slightly flat back; The antennae are attached to the protuberance of the forehead (called antennal basal tumor), which can make the antennae rotate freely and cover the back of the insect. Claws are usually single tooth type, a few are attached teeth type. Except for Cerambycidae, the midthoracic plate often has a articulator. Larva body is thick and fat, oblong, slightly flat, a few slender. The head is broad or oblong, and often retracts into the anterior sternum
longicorn is known as longicorn because it is as powerful as an ox and is good at flying in the sky; And because it makes a sound of "click, click", its sound is very similar to the sound of sawing trees, so it is also called "sawing tree Lang". In addition, some areas in southern China are called "shuiguniu" and "Shuiniu", while some areas in northern China are called "chunniuer". Species and distribution the size of this insect varies greatly from species to species. The largest one has a body length of 11cm, while the smaller one has a body length of only 0.4-0.5cm. The most special feature of this insect is that its antennae are extremely long. In North China, there is a species called Cerambycidae longicornis, whose antennae length can reach 4-5 times of its own body length. In common Cerambycidae, its antennae can also reach about 10cm. Another feature is its powerful jaw. Species and distribution: the body color of longicorn is mostly black with metallic luster. Its alts are common in forest areas, gardens, orchards and other places. When flying, its Coleoptera are open and motionless, and its inner wings fan to make a "whining" sound. Most of them occurred in 1 generations in 1 years, and in 3 or 2 or 2 years, which are pests that damage trees such as poplar, willow, mulberry, Sophora japonica, Wutong and Melia.
longicorn is a well-known insect. Many people caught or observed longicorn in their childhood and became interested in them. Interestingly, when you grab it, it makes a "creak" sound, trying to escape. If you tie a thin thread on its leg and let it fly, you can still hear the sound of "camp". There are many ways to play longicorn, such as racing, pulling cars, fishing and barking. Compared with the electric toys that are full of the market, playing this kind of "natural pet" is much more interesting. But I want to remind you that when you play, be careful not to be bitten by the strong upper jaw of Longhorn
the vowel o makes short vowels in stressed closed syllables/ ɑ/ When pronouncing, the tip of the tongue is close to the lower teeth, the back of the tongue is raised, the gums are nearly fully open, the mouth is large, and the lips are round. This sound appears at the beginning, middle and end of the word, such as:
ox bull (castrated)
October
Octopus
on (emphasizing contact)
ostrich
operate, Operation
I hope I can help you solve your doubts.

5. On the morning of May 31, the municipal government will hold the opening ceremony of the Civic Center in the south of the Civic Square, and the Civic Center will officially open to the public. Yesterday, the reporter came to the office area of the western district municipal government of the civic center to interview the busy and orderly preparations of the relevant units< br />
http://www.sz.gov.cn/smzxfl/tzgg/200405190063.htm