LT5 miner
Publish: 2021-04-29 18:06:18
1. From the user's point of view, bitcoin is a mobile application or computer program, which can provide a personal bitcoin wallet with which users can pay and receive bitcoin. This is how bitcoin works for most users
behind the scenes, the entire bitcoin network shares a public ledger called "blockchain.". This general ledger contains every transaction processed, so that the user's computer can verify the validity of each transaction. The authenticity of each transaction is protected by the electronic signature corresponding to the sending address, which enables users to have complete control over the bitcoin transferred out from their own bitcoin address. In addition, anyone can use the computing power of specialized hardware to process transactions and get a bitcoin reward for it. This service is often referred to as "mining."
bitcoin mining has gone through three stages of development. When bitcoin was just born, the price of bitcoin was very low. People just took bitcoin as a game and used their ordinary computers to mine. However, in 2012, with the rise of bitcoin price, people found that the mining speed of graphics cards was fast, so, People began to buy a large number of graphics cards and assemble them for mining, commonly known as "burning graphics cards"; The third stage is the well-known ASIC miner mining. Since Avalon proced the world's first ASIC bitcoin miner, bitcoin mining has been completely subverted, and mining has become a special professional thing.
behind the scenes, the entire bitcoin network shares a public ledger called "blockchain.". This general ledger contains every transaction processed, so that the user's computer can verify the validity of each transaction. The authenticity of each transaction is protected by the electronic signature corresponding to the sending address, which enables users to have complete control over the bitcoin transferred out from their own bitcoin address. In addition, anyone can use the computing power of specialized hardware to process transactions and get a bitcoin reward for it. This service is often referred to as "mining."
bitcoin mining has gone through three stages of development. When bitcoin was just born, the price of bitcoin was very low. People just took bitcoin as a game and used their ordinary computers to mine. However, in 2012, with the rise of bitcoin price, people found that the mining speed of graphics cards was fast, so, People began to buy a large number of graphics cards and assemble them for mining, commonly known as "burning graphics cards"; The third stage is the well-known ASIC miner mining. Since Avalon proced the world's first ASIC bitcoin miner, bitcoin mining has been completely subverted, and mining has become a special professional thing.
2. It is recommended that you take a look at the Z3 matrix mining machine of Diancun technology. It has high configuration, high performance and low energy consumption. When the main network of filecoin goes online, it must be the first choice for home mining machine.
3.
这个 DFLiSong-Lt 含简体
4. Of course not! The former is 5V fixed output, the latter is adjustable output, pin arrangement is not the same!
5. It's staircase 5 on the plan. LT5 is the label of the staircase
6.
McLaren 765lt's price is 358000 US dollars, which is 50000 US dollars higher than 720s. It will take at least 5 million US dollars to start in China
this article comes from the author of auto home, which does not represent the standpoint of auto home
7. =The CPU of = 15 is 1g, the CPU of 18 is 1.4g, and lt18i is the upgraded version of lt15i, one is Android 2,33, and the other is Android 2,34. The CPU model is the same, but the CPU of 18 is overclocking to 1.4g, and other components are the same. 18 has two more colors, one is white and the other is pink (15 also has pink, but only Japanese version has it)
8. You can only see it in the header file. If you don't have it, go to the download website to check it
9. In 2006, with the deepening application of PC in audio-visual entertainment, we suddenly found that we have come to a crossroads of audio generation replacement. Just like when CD replaced LP, I still miss LP's voice which is not hifi but more human. But in terms of market share, CD has eliminated LP mercilessly Of course, we sincerely respect the fans who still insist on using LP. They are the faithful guardians of the ideal of human audio playback. It is precisely because of their influence that the audio instry has not degenerated to the point where it's easy to hold one. Looking back on the history, whenever there is structural replacement of sound source equipment, two factors are the most critical. One is technology, such as CD replacing LP; The other is the way to obtain content or software. The most typical example is the elimination of VCD to video recorders. Frankly speaking, the popularity of VCD in those years was not the result of the efforts of any manufacturer or instry. The most fundamental reason can almost be attributed to the proliferation of pirated discs. It is a large number of cheap pirated software that has directly led to the elimination of the video player instry and video recorders. At least half of the pirates in the military medal of the video player instry<
so far, CD has been steadily going through 24 years, but with the popularity of broadband (let's say broadband in China) and the inherent shortcomings of CD relative to hard disk, CD is constantly challenged by PC. Due to the abundant resources on the Internet and the convenience of access, CD is even likely to be eliminated by PC. This is not a groundless guess or expectation, but determined by the way the software is obtained. PC HI FI is the future trend. In this regard, many high-end enthusiasts may be dismissive, the Internet is also full of PC not hi fi point of view. To be sure, there are few hi fi sound cards that are qualified to be called hi fi according to the standard of mid-range hi fi or above. However, with the continuous emergence of ap2496, German tank flame version and other excellent sound cards, the level of PC sound source has been more and more close to hi fi. It is time for those who still hold the old idea that PC does not have hi fi to change their concept. Recently, the Xuanyuan series sound card launched by leshibang is more likely to become a shortcut to PC hi fi
recently, we received the test sample of Xuanyuan LT, the PCB version number is 2.5, which is the same as the proct officially sold<
Xuanyuan lt's proct features
> the main chip adopts via envy24 series vt1723 PCI audio controller
> specially customized driver and control interface, with reliable stability and powerful functions
> codec adopts Wolfson wm8776, with analog output signal-to-noise ratio up to 108db, The analog input part is also as high as 102dB
> the analog output stage adopts a fever level operational amplifier op275, which is combined with the original balanced analog filter amplifier circuit (Bala) of leshibang to maximize the efficiency of DAC and ensure the sound has a full musical flavor
> 4-way precision linear regulated power supply, and the key parts are filtered by expensive tantalum capacitors, Provide stable and pure power supply for all levels of circuits of sound card
> the analog output part uses expensive capacitance components such as Wima and daily chemical to moisten the sound color
> the analog output adopts single channel gold-plated RCA interface to provide the highest fidelity sound output
> the peak to peak value of analog output can be up to 3V or above, which can be directly connected to the later stage power amplifier, Or no front-end multimedia speaker
> coaxial digital output, using gold-plated RCA interface, and the use of professional digital transformer isolation, to prevent digital signal receiving end from computer interference
> integrated microphone amplifier
> powerful control software, you can freely set the sampling frequency: 44.1KHz, 48Khz 96KHz
> support Dolby Digital ex and DTS es digital signal output
> support 3D sound positioning technology such as QSound, environmentfx, directsound3 SW, a3d, eax
> support Windows XP / 2000 / me / 98se driver
Technical specification of Xuanyuan LT
> 24bit high quality D / A and a / D converter
> meet 32bit PCI 2.2 interface specification, It also supports bus mastering mode, 2-channel RCA analog output, 1 signal input line in (3.5mm interface), 1 microphone input mic in (3.5mm interface), 1 s / PDIF fiber output, up to 24bit / 96KHz, and 1 s / PDIF RCA coaxial output, Up to 24bit / 96KHz
● one 4Pin pin CD / video input
> supports Microsoft DirectSound 3D HW (hardware acceleration)
technical parameters of Xuanyuan LT
● analog output
> frequency response (20Hz ~ 20kHz): 1 ± 0.5dB
> signal to noise ratio (A-weighted): 108db
> dynamic range: 108db
> total harmonic distortion: 0.001%
● digital output
> frequency response (20Hz ~ 20kHz): 0.5dB ± 0dB
> signal to noise ratio (a-weight): 140dB
> dynamic range: 140dB
> total harmonic distortion: 0.00001%
Xuanyuan lt is black. For a 2-channel sound card, the layout is quite large, and the circuit units are arranged very open, which helps to rece the interference between different circuits
all kinds of input and output interfaces of Xuanyuan LT, the most important analog and digital output interfaces adopt high-quality gold-plated RCA interface, so the contact reliability and signal transmission performance are better than ordinary headphone socket. The advantage of RCA socket is that users can use high-quality fever wire, which is very attractive to hi fi users. However, RCA wire, an advanced earphone, is rarely available in the market and is extremely difficult to buy
the main chip is via's vt1723 chip, which I believe audio lovers are quite familiar with. Last year, the German tank 1723 sound card which successfully created the "1723 phenomenon" also uses this chip. From the previous experience, this chip has a very good digital output level<
codec is one of the key factors that affect the sound quality of sound card. Xuanyuan series adopts Wolfson's wm8776. Wm8776 is a high-performance 2-channel codec, which supports 24bit / 192Khz. When decoding audio, the signal-to-noise ratio of its D / a part is as high as 108db
the design of the analog part after D / a conversion has always been the strength of leshibang, which is fully reflected in the high-end Xuanyuan series sound card. The analog output part of Xuanyuan LT adopts high-performance op275 operational amplifier, its conversion rate is as high as 22V / us, and the distortion is only 0.0006%! Its performance is much better than the common 4558 on the sound card. But high performance also leads to high cost. The cost of op275 is ten times or even more than ten times that of ordinary 4458
ti's 5532 operational amplifier is used for microphone amplification at the microphone input end of the sound card. Although the grade is lower than op275, it has exceeded the analog output operational amplifier of most sound cards. Good words put together with the first-class codec, Xuanyuan LT microphone recording effect is certainly good
the materials used for the sound card of the yuebang Xuanyuan series are very solid. In the key parts, the hi fi Wima capacitor and the expensive tantalum capacitor, which were rarely seen on the sound card before, are even used. It can be seen that yuebang is eager to make good procts
in the analog output part, only first-class op amp is not enough, good power supply is also very important. Xuanyuan LT does not take power directly from PCI slot, but adds a level of voltage regulator in the middle, so that op275 operational amplifier can get better power supply, so as to further improve the sound quality level
Xuanyuan LT provides both coaxial and optical fiber digital outputs, and adds a pulse transformer at the coaxial output end, which can rece the interference between the sound card and the decoder, and further improve the quality of digital output
an internal analog input socket is provided in the upper right corner of the sound card. We don't think it's necessary at all. People who buy this kind of sound card will never connect the CD-ROM drive and sound card with analog cable. It's better to remove it to rece the cost
although the hardware configuration is different, there are many similarities between Xuanyuan LT and another famous sound card ap2496 in terms of design ideas. It is also a 2-channel pure music card, also uses RCA interface, and also emphasizes sound quality. I believe that with the more and more extensive application of PC in audio, there will be more similar excellent sound cards
e to the strong subjectivity of audio procts (the common rmaa test actually has little value for the evaluation of sound quality), the evaluation of sound quality takes a certain time. The audition report of Xuanyuan lt will be published in the near future. Please pay attention to it.
so far, CD has been steadily going through 24 years, but with the popularity of broadband (let's say broadband in China) and the inherent shortcomings of CD relative to hard disk, CD is constantly challenged by PC. Due to the abundant resources on the Internet and the convenience of access, CD is even likely to be eliminated by PC. This is not a groundless guess or expectation, but determined by the way the software is obtained. PC HI FI is the future trend. In this regard, many high-end enthusiasts may be dismissive, the Internet is also full of PC not hi fi point of view. To be sure, there are few hi fi sound cards that are qualified to be called hi fi according to the standard of mid-range hi fi or above. However, with the continuous emergence of ap2496, German tank flame version and other excellent sound cards, the level of PC sound source has been more and more close to hi fi. It is time for those who still hold the old idea that PC does not have hi fi to change their concept. Recently, the Xuanyuan series sound card launched by leshibang is more likely to become a shortcut to PC hi fi
recently, we received the test sample of Xuanyuan LT, the PCB version number is 2.5, which is the same as the proct officially sold<
Xuanyuan lt's proct features
> the main chip adopts via envy24 series vt1723 PCI audio controller
> specially customized driver and control interface, with reliable stability and powerful functions
> codec adopts Wolfson wm8776, with analog output signal-to-noise ratio up to 108db, The analog input part is also as high as 102dB
> the analog output stage adopts a fever level operational amplifier op275, which is combined with the original balanced analog filter amplifier circuit (Bala) of leshibang to maximize the efficiency of DAC and ensure the sound has a full musical flavor
> 4-way precision linear regulated power supply, and the key parts are filtered by expensive tantalum capacitors, Provide stable and pure power supply for all levels of circuits of sound card
> the analog output part uses expensive capacitance components such as Wima and daily chemical to moisten the sound color
> the analog output adopts single channel gold-plated RCA interface to provide the highest fidelity sound output
> the peak to peak value of analog output can be up to 3V or above, which can be directly connected to the later stage power amplifier, Or no front-end multimedia speaker
> coaxial digital output, using gold-plated RCA interface, and the use of professional digital transformer isolation, to prevent digital signal receiving end from computer interference
> integrated microphone amplifier
> powerful control software, you can freely set the sampling frequency: 44.1KHz, 48Khz 96KHz
> support Dolby Digital ex and DTS es digital signal output
> support 3D sound positioning technology such as QSound, environmentfx, directsound3 SW, a3d, eax
> support Windows XP / 2000 / me / 98se driver
Technical specification of Xuanyuan LT
> 24bit high quality D / A and a / D converter
> meet 32bit PCI 2.2 interface specification, It also supports bus mastering mode, 2-channel RCA analog output, 1 signal input line in (3.5mm interface), 1 microphone input mic in (3.5mm interface), 1 s / PDIF fiber output, up to 24bit / 96KHz, and 1 s / PDIF RCA coaxial output, Up to 24bit / 96KHz
● one 4Pin pin CD / video input
> supports Microsoft DirectSound 3D HW (hardware acceleration)
technical parameters of Xuanyuan LT
● analog output
> frequency response (20Hz ~ 20kHz): 1 ± 0.5dB
> signal to noise ratio (A-weighted): 108db
> dynamic range: 108db
> total harmonic distortion: 0.001%
● digital output
> frequency response (20Hz ~ 20kHz): 0.5dB ± 0dB
> signal to noise ratio (a-weight): 140dB
> dynamic range: 140dB
> total harmonic distortion: 0.00001%
Xuanyuan lt is black. For a 2-channel sound card, the layout is quite large, and the circuit units are arranged very open, which helps to rece the interference between different circuits
all kinds of input and output interfaces of Xuanyuan LT, the most important analog and digital output interfaces adopt high-quality gold-plated RCA interface, so the contact reliability and signal transmission performance are better than ordinary headphone socket. The advantage of RCA socket is that users can use high-quality fever wire, which is very attractive to hi fi users. However, RCA wire, an advanced earphone, is rarely available in the market and is extremely difficult to buy
the main chip is via's vt1723 chip, which I believe audio lovers are quite familiar with. Last year, the German tank 1723 sound card which successfully created the "1723 phenomenon" also uses this chip. From the previous experience, this chip has a very good digital output level<
codec is one of the key factors that affect the sound quality of sound card. Xuanyuan series adopts Wolfson's wm8776. Wm8776 is a high-performance 2-channel codec, which supports 24bit / 192Khz. When decoding audio, the signal-to-noise ratio of its D / a part is as high as 108db
the design of the analog part after D / a conversion has always been the strength of leshibang, which is fully reflected in the high-end Xuanyuan series sound card. The analog output part of Xuanyuan LT adopts high-performance op275 operational amplifier, its conversion rate is as high as 22V / us, and the distortion is only 0.0006%! Its performance is much better than the common 4558 on the sound card. But high performance also leads to high cost. The cost of op275 is ten times or even more than ten times that of ordinary 4458
ti's 5532 operational amplifier is used for microphone amplification at the microphone input end of the sound card. Although the grade is lower than op275, it has exceeded the analog output operational amplifier of most sound cards. Good words put together with the first-class codec, Xuanyuan LT microphone recording effect is certainly good
the materials used for the sound card of the yuebang Xuanyuan series are very solid. In the key parts, the hi fi Wima capacitor and the expensive tantalum capacitor, which were rarely seen on the sound card before, are even used. It can be seen that yuebang is eager to make good procts
in the analog output part, only first-class op amp is not enough, good power supply is also very important. Xuanyuan LT does not take power directly from PCI slot, but adds a level of voltage regulator in the middle, so that op275 operational amplifier can get better power supply, so as to further improve the sound quality level
Xuanyuan LT provides both coaxial and optical fiber digital outputs, and adds a pulse transformer at the coaxial output end, which can rece the interference between the sound card and the decoder, and further improve the quality of digital output
an internal analog input socket is provided in the upper right corner of the sound card. We don't think it's necessary at all. People who buy this kind of sound card will never connect the CD-ROM drive and sound card with analog cable. It's better to remove it to rece the cost
although the hardware configuration is different, there are many similarities between Xuanyuan LT and another famous sound card ap2496 in terms of design ideas. It is also a 2-channel pure music card, also uses RCA interface, and also emphasizes sound quality. I believe that with the more and more extensive application of PC in audio, there will be more similar excellent sound cards
e to the strong subjectivity of audio procts (the common rmaa test actually has little value for the evaluation of sound quality), the evaluation of sound quality takes a certain time. The audition report of Xuanyuan lt will be published in the near future. Please pay attention to it.
10. "C + + Primer Plus" this book is still very good, compared with "C + + primer" is more suitable for beginners
the latest edition of C + + Primer Plus is the sixth edition, which was published in October 2011, adding new content about C + + 11. But at present, there is only the original English version, and there is no Chinese version
as for the Chinese version of the fifth edition of C + + Primer Plus, the translation quality of the Chinese version is not good and bitter. If you can read English, please read the original English version.
the latest edition of C + + Primer Plus is the sixth edition, which was published in October 2011, adding new content about C + + 11. But at present, there is only the original English version, and there is no Chinese version
as for the Chinese version of the fifth edition of C + + Primer Plus, the translation quality of the Chinese version is not good and bitter. If you can read English, please read the original English version.
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