Handan bit miner
bitcoin mining machine is a kind of computer used to earn bitcoin. This kind of computer generally has professional mining chips and works in the way of burning graphics card, which consumes a lot of power. It is one of the ways to get bitcoin that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server
mining is actually a competition of performance and equipment, and a competition of computing power among miners. Miners with more computing power are more likely to dig bitcoin. With the increase of computing power in the whole network, it is more and more difficult to dig bits with traditional devices (CPU, GPU). People have developed chips specially used for mining. Chip is the core part of mining machine. The process of chip operation will proce a lot of heat, in order to cool down, bitcoin miner is generally equipped with heat sink and fan
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
bitcoin mining started with low-cost hardware such as CPU or GPU, but with the popularity of bitcoin, the mining process has changed greatly. Nowadays, the mining activities are transferred to the field programmable gate array, and the hash speed can be achieved through optimization. The mining efficiency of this mode is very high
Mining needs high-end graphics card, mining equipment is the first to eliminate NV graphics card. Mining must be done with graphics cards. The overall structure of mining equipment and ordinary PC machine is different is the number of graphics cards. You can install four or eight through pic extension
after expansion, an expansion shelf needs to be made. To fix the graphics card and other equipment, we need to get some fans on the shelf to cool the graphics card
CPU is not very important. But not lower than i5< br />
Shenzhen business chain network technology Co., Ltd. was established on November 1, 2017<
Qiu Han, legal representative,
the business scope includes: development and sales of blockchain software and information system software; Electronic Commerce; Development and sales of computer software and hardware, peripheral equipment, electronic procts and information system software; Information technology consulting; Information transmission, software and information technology service instry; Domestic trade (excluding exclusive, monopolized and controlled commodities); To engage in import and export business (except for the items prohibited by laws, administrative regulations and decisions of the State Council, and the restricted items can only be operated after obtaining permission).
bitcoin mining machine scam is to make money by leasing or selling mining machines the so-called "mining machine" refers to the computer that installs and runs specific software and algorithms. As we all know, bitcoin can only be obtained through long-term running algorithm of computer, and the total amount is limited. Therefore, some manufacturers have launched specially designed and optimized computer procts, known as "mining machine" in January 2018, a mining computer named "Kodak kashminer" appeared at the international consumer electronics exhibition in Las Vegas, which aroused people's attention. But now critics point out that the mining machine plan is actually a fraud, and the publicity for profit is also false precautions: 1. The general computer configuration of bitcoin household can not meet the requirements of bitcoin miner, so it is difficult to earn the electricity cost of a day 2. If you have to use bitcoin mining machine to dig coins, it is suggested to choose a reliable and legal platform to go more steadily. In the legal platform mining, the daily income can be seen, and a certain amount can be withdrawn
sample program:
? Include & lt; stdio.h>< br />int main(int argc, char *argv[])
{
int i;< br /> float f, avg = 0.0; < br /> for(i=0; i< 12; i++)
{
scanf("% f", & f);< br /> avg += f;< br /> }
printf("$%. 2f\ n", avg/12.0);< br /> return 0;
}
there are two main reasons for errors in your program:
? Include & lt; stdio.h>< br />void main()
{
int i;< br />float m,sum,ave;< br />i=1;< br />sum=0;< br />while(i<= 12)
{
scanf("% f",& m);< br />sum+=m;< br />i++;< br />}
ave=sum/12.0;
/ / delete this statement. See the next explanation for the reason
ave + = 0.005
/ / the dollar sign is before the number, not after the number!!! How careless
/ / should be changed to: printf (& quot; $%) 2f\ n", ave);
/ / and you don't understand: printf (& quote;%) 2f\ n", ave); This is the meaning of the sentence, so you wrote ave + = 0.005 above; This statement
/ / "%. 2F" means to output the floating-point number to two decimal places, and it will be automatically rounded< br />printf("%. 2f$\ n", ave);< br />}