Application-Specific Integrated Circuit refers to an integrated circuit specifically designed to perform a specific computing task. It is very common to use ASIC for mining in the field of blockchain. This article will analyze the principle of ASIC mining and why it should be anti-ASIC.
For Bitcoin, mining has gone through four stages: CPU, GPU, FPGA and ASIC. GPU is naturally suitable for parallel simple operations, so the execution of SHA256 is much higher than the CPU. FPGA is a programmable hardware, because it has a certain degree of universality, so the unit price will be relatively expensive. ASIC has a large initial design investment, but the unit price will be cheaper after mass production. Therefore, if you can determine that the market size is relatively large, the use of ASIC technology will be the most cost-effective.
In a nutshell, mining is running complicated calculations in the search for a specific number. Whether it`s an ASIC miner or a GPU mining rig, mining hardware must run through many calculations before finding that number. In proof of work systems like Bitcoin, the first one to find that number gets a reward - at the time of writing, 12.5 Bitcoins worth around $96,850. That reward will fall to 6.25 Bitcoins in May 2020. Antin S19J Pro 96Th,Antin S19J Pro,S19J Pro 96T Antminer,s19j pro antminer,s19 xp antminer Shenzhen YLHM Technology Co., Ltd. , https://www.nbapgelectrical.com
With the popularization of smart phones and tablet computers, electronic products featuring touch screens have gradually become children's “playmates†that they can’t afford to use. In addition, many electronic products developed specifically for children, students and other special groups flood the market with children. Students seem to have become a major consumer "gold mine" for electronic products.
However, since almost all digital electronic products do not indicate the use of age groups and whether they are suitable for use by young children, and the state has no legally mandated requirements, this issue has caused controversy and has become a topic of concern for parents.
Parents question electronic products as "vision killer"
Recently, at Shanghai Wuguan Hospital, Mr. Yang took his 4-year-old son to check his eyes. Mr. Yang told reporters that his son recently blinked too hard and suspected that it was related to his son’s frequent use of tablet computers.
Similar ideas are universal among parents. According to Mr. Xu, a parent, the “experience machine†in the store is filled with various games. Many children play in the game after school, which has a great influence on children’s eyesight.
According to a survey conducted by Professor Cao Jin of School of Journalism of Fudan University and other students of 100 students and their parents in two kindergartens in Yangpu District, parents of 3- to 5-year-old preschool children in Shanghai are basically open to children using iPads, iPhones and other electronic products. Of the attitudes, 43.3% explicitly expressed their support for children's use, 42.3% said that it did not matter, and only 14.4% of parents explicitly objected. "Site visits and exchanges with children have revealed that families are more dependent on new technologies than we think." Cao Jin said that a child named Huang Kai told her that the iPad was her parents' birthday. Gift, We do not watch TV almost since we had iPad. Watch cartoons and play games with iPad. When you go to bed every day, you put your iPad on the edge of your pillow, otherwise you will not sleep. 79.8% of preschool children are more devoted to video games and even addicted to it. At the same time, the proportion of young children suffering from low vision and myopia is gradually increasing.
A junior high school student in Xuhui District took 50 students to investigate. 36 students have a tablet computer. Most students use tablet computers once or twice a week, but 28% of students use tablet computers almost every day. 90% of the students believe that the tablet is a "vision killer."
In Apple's product introduction, the limit of human-resolved pixels is 300ppi pixel density. Tablet PC display pixel density of 260ppi will no longer appear grainy, and Apple's Retina display pixel density as long as more than 200ppi can not distinguish individual pixels. Apple writes, "Under normal viewing distance, your eyes can't see individual pixels at all. You can't see individual pixels and you can see the whole picture, article or game."
According to medical personnel, the length of the upper arm of an adult is about 30 cm, and a reading distance of about 30 cm is formed when reading. Children's arms are shorter than adults and "reading distance" may not reach adults. Under this circumstance, according to the human-eye pixel limit resolution formula provided by Apple, children may use these adult-standard products and may still see pixel particles. The same screen can be used by adults and young children. The degree of friendship is not the same.
Experts said that although the computer screen is not easy to cause myopia is inconclusive, but in the premise of seeing the computer text, the computer reading distance should be as far as possible. For young children using the iPad, they may spend more time staring at the screen than adults, and they can't keep reading distances for adults. They don't even know that eye fatigue may cause myopia.
The root cause of the problem Children's electronic product standards are missing The reporter found that iPad and other digital electronic devices have almost no indication of the use of age groups and whether they are suitable for children's use, and there are no relevant tests for children's use, from the description of the production enterprises to the industry. The relevant standards are all blank.
An expert from the China Electronics Standardization Institute believes that China's current standards for mobile phones, computers, and other products are based on the use of these products for adult use. There is no specific provision for children. In the same way, the relevant standards for the application software of these electronic products do not have children-protected content.
According to market research, in addition to the products used by adults, such as mobile phones and computers, a large number of electronic products touched by children are specialized electronic products under the banner of “children†or “students,†the most common of which are children. Computers, learning machines, and dot-reading machines (pen), etc. In addition, game consoles and e-books are also products for older children, especially primary school students.
People in the industry believe that although some products have standardized specifications, the quality of such products on the market is uneven, and consumers have no choice. The reason for this phenomenon is that the standard system is not perfect and the standard implementation is not in place.
In this regard, Yu Yuntao, an expert from the Educational Technology Subcommittee of the National Information Technology Standardization Technical Committee and an engineer at the China Electronics Standardization Institute, believes that the standards involved are more of a basic standard. In the future, they should add indicators that target the characteristics of children or students. It is more suitable for children's physical characteristics and usage habits.
This is the basic principle of ASIC.
There are so many people and powerful computing systems trying to mine Bitcoin that miner groups form to find that number and share the profit. Even more, the faster your hardware, the more you earn. That`s why people who can afford it opt for ASIC miners because it gives them the greatest chance of earning cryptocurrency in exchange for their investment.
Each cryptocurrency has its own cryptographic hash algorithm, and ASIC miners are designed to mine using that specific algorithm. Bitcoin ASIC miners are actually designed to calculate the SHA-256 hash algorithm. In the case of Litecoin, it uses Scrypt. That means technically they could mine any other coin that`s based on the same algorithm, though typically, people who buy ASIC hardware designed for Bitcoin mine that specific digital currency.