How long does Shenma m3 miner guarantee
Publish: 2021-05-24 01:49:29
1. Whether m3 can generate value for you depends on your electricity cost
many free electricity miners use m3 and pay back in two months
50 cents per kilowatt hour miners use m3, and their daily income is not enough to pay the electricity bill.
many free electricity miners use m3 and pay back in two months
50 cents per kilowatt hour miners use m3, and their daily income is not enough to pay the electricity bill.
2. If electricity is cheap, it's the most cost-effective
3. No, it's like the mining machine doesn't work
4.
Shenma m3, measured parameters! The calculation force of the two mining machines exceeded 13T
5. I have installed video teaching materials, and I can download them on the Internet. If I can't install them, how can you use them
6. Find in the settings and restore the factory settings
7.
Hengjiang (Shanghai) Real Estate Co., Ltd. is a limited liability company (invested or controlled by natural person) registered on August 15, 2018, with its registered address at room 208, building 3, Fudi Pujiang center, Lane 1505, LIANHANG Road, Minhang District, Shanghai
the unified social credit code / registration number of Hengjiang (Shanghai) Real Estate Co., Ltd. is 91310112ma1gc4ut8n, and Xue Wenwen, the legal person of the company, is currently in business
The business scope of Hengjiang (Shanghai) Real Estate Co., Ltd. is: real estate development and operation, enterprise management, landscape architecture construction engineering special design, landscape engineering, housing construction engineering construction, municipal public construction engineering construction, building intelligent construction engineering design and construction, e-commerce (not allowed to engage in financial business), computer graphic design and proction, business consulting, Conference services, machinery and equipment leasing (not allowed to engage in financial leasing), advertising design, proction, agency and release, sales of office supplies, mechanical and electrical equipment, communication equipment and electronic procts, technology development, technical consultation, technology transfer and technical services in the field of network technology, property management and real estate brokerage services Projects that need to be approved according to law can only be operated after being approved by relevant departmentscheck more information of Hengjiang (Shanghai) Real Estate Co., Ltd. through aiqicha
8. PUC signal is power on clear signal
por (power on reset) is a power on reset signal, which is only generated when the following two events occur:
1
2. When RST / NMI is set to reset mode, low level signal appears on RST / NMI pin
the generation of POR signal will always proce PUC (power up clear) signal, but the generation of PUC signal will not proce POR signal. PUC signal is a power on clear signal, and its event is:
1. POR signal occurs
2. In the watchdog mode, the watchdog time is up
3. The watchdog timer writes the wrong security key value
4. When RST / NMI is set to NMI mode, a low-level signal appears on the rst / NMI pin,
5. The flash memory writes the wrong security key value.
por (power on reset) is a power on reset signal, which is only generated when the following two events occur:
1
2. When RST / NMI is set to reset mode, low level signal appears on RST / NMI pin
the generation of POR signal will always proce PUC (power up clear) signal, but the generation of PUC signal will not proce POR signal. PUC signal is a power on clear signal, and its event is:
1. POR signal occurs
2. In the watchdog mode, the watchdog time is up
3. The watchdog timer writes the wrong security key value
4. When RST / NMI is set to NMI mode, a low-level signal appears on the rst / NMI pin,
5. The flash memory writes the wrong security key value.
9. Here mainly talks about MSP430 MCU reset
there are two reset signals of MSP430: power on reset signal (POR) and power on clear signal (PUC). There are also five signals that can trigger por and PUC: one is from the reset pin, the other is from the signal generated by the error of writing flash key value
POR signal only occurs in two cases:
(1) microprocessor is powered on
(2) the rst / NMI pin generates a low-level system reset
conditions of PUC signal generation:
(1) POR signal generation
(2) when the watchdog is valid, the watchdog timer overflows
(3) error in writing watchdog timer security key value
(4) there is an error in writing the security key value of flash memory
the relationship between por and PUC: the generation of POR signal will cause the system to reset and generate PUC signal. PUC signal does not cause POR signal
regardless of the reset triggered by POR signal or PUC signal, MSP430 will read the reset interrupt vector from the address 0xfffe, and the program will start from the address indicated by the interrupt vector. In the condition of triggering PUC signal, in addition to the PUC signal generated by por, other legumes read the corresponding interrupt vector to determine the cause of PUC signal, so as to make corresponding processing< (1) rst / NMI pin function is set to reset function
(2) all I / O pins are set as input
(3) the peripheral mole is initialized, and its register value is the default value in the relevant manual
(4) the status register SR is reset
(5) the watchdog is activated to enter the working mode
(6) the program counter PC loads the address at 0xfffe, and the microprocessor starts to execute the program from this address< There are three typical reset circuits:
(1) connect 100k ohm pull-up resistor to RST / NMI pin
(2) on the basis of (1), 0.1uF capacitor is connected, and one end of the capacitor is grounded, which can make the reset more reliable
(3) on the basis of (2), a diode of type in4008 is connected to the resistor in parallel, which can reliably realize the power on immediately after the power failure of the system
bor
in chips without bor & quot; If the power on of the chip is periodic, the VCC must be reced to Vmin to ensure a new POR signal when the VCC is loaded again. If the VCC does not drop below Vmin in a cycle, or because of interference, the POR signal will not occur, so the initial state after power on will be incorrect
for moles with bor, it should be & quot; When VCC exceeds VCC (start), POR signal becomes valid until VCC exceeds V (b)_ It +, and then after a delay t (BOR). The time delay t (BOR) will be extended according to the decrease of the tilt angle when the VCC voltage becomes higher. Lag
vhys (B_ It -) makes VCC must be reced to V (b)_ It -) to ensure that the POR signal is generated again through the bor circuit. And V (b)_ It -) is higher than Vmin, which enables bor to provide an effective power failure restart signal when VCC does not drop to Vmin
battery replacement of high-precision equipment will cause voltage fluctuation. The zero power low voltage reset (BOR) function is used to reset MSP430 under low voltage conditions to prevent device unknowable behavior.
there are two reset signals of MSP430: power on reset signal (POR) and power on clear signal (PUC). There are also five signals that can trigger por and PUC: one is from the reset pin, the other is from the signal generated by the error of writing flash key value
POR signal only occurs in two cases:
(1) microprocessor is powered on
(2) the rst / NMI pin generates a low-level system reset
conditions of PUC signal generation:
(1) POR signal generation
(2) when the watchdog is valid, the watchdog timer overflows
(3) error in writing watchdog timer security key value
(4) there is an error in writing the security key value of flash memory
the relationship between por and PUC: the generation of POR signal will cause the system to reset and generate PUC signal. PUC signal does not cause POR signal
regardless of the reset triggered by POR signal or PUC signal, MSP430 will read the reset interrupt vector from the address 0xfffe, and the program will start from the address indicated by the interrupt vector. In the condition of triggering PUC signal, in addition to the PUC signal generated by por, other legumes read the corresponding interrupt vector to determine the cause of PUC signal, so as to make corresponding processing< (1) rst / NMI pin function is set to reset function
(2) all I / O pins are set as input
(3) the peripheral mole is initialized, and its register value is the default value in the relevant manual
(4) the status register SR is reset
(5) the watchdog is activated to enter the working mode
(6) the program counter PC loads the address at 0xfffe, and the microprocessor starts to execute the program from this address< There are three typical reset circuits:
(1) connect 100k ohm pull-up resistor to RST / NMI pin
(2) on the basis of (1), 0.1uF capacitor is connected, and one end of the capacitor is grounded, which can make the reset more reliable
(3) on the basis of (2), a diode of type in4008 is connected to the resistor in parallel, which can reliably realize the power on immediately after the power failure of the system
bor
in chips without bor & quot; If the power on of the chip is periodic, the VCC must be reced to Vmin to ensure a new POR signal when the VCC is loaded again. If the VCC does not drop below Vmin in a cycle, or because of interference, the POR signal will not occur, so the initial state after power on will be incorrect
for moles with bor, it should be & quot; When VCC exceeds VCC (start), POR signal becomes valid until VCC exceeds V (b)_ It +, and then after a delay t (BOR). The time delay t (BOR) will be extended according to the decrease of the tilt angle when the VCC voltage becomes higher. Lag
vhys (B_ It -) makes VCC must be reced to V (b)_ It -) to ensure that the POR signal is generated again through the bor circuit. And V (b)_ It -) is higher than Vmin, which enables bor to provide an effective power failure restart signal when VCC does not drop to Vmin
battery replacement of high-precision equipment will cause voltage fluctuation. The zero power low voltage reset (BOR) function is used to reset MSP430 under low voltage conditions to prevent device unknowable behavior.
10. The biggest difference between por and PUC signals is that the events that generate the signals are different. Por is: the device is powered on or the rst pin is low. PUC is: Por, watchdog, on-chip flash write error security parameters
both por and PUC signals reset the status register, and the I / O pin is in the input mode. As for the influence of these two signals on the registers of other moles, it depends on the specific chip model, so it depends on the specific device manual
this should be very clear!
both por and PUC signals reset the status register, and the I / O pin is in the input mode. As for the influence of these two signals on the registers of other moles, it depends on the specific chip model, so it depends on the specific device manual
this should be very clear!
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