Power supply problem. Although the motherboard light is on, it is very likely that the power supply has problems, such as the power cord is not connected, the power supply is damaged, and so on. The method of investigation is to unplug the power cord and plug it tightly, and then try to turn it on, if not, replace the other power supply, if it returns to normal, it indicates that the problem is the power supply. Memory problems.
It is recommended that you open the rear cover and check the output status of the power supply board. The output voltage of 3V, 5V, 12V is normal.>
Research achievements of Tsinghua University in recent years: "Micius" quantum satellite, UAV flight control system, CRISPR-Cas9 technology to improve vision, high-speed unmanned vehicles, speech recognition technology.
Tsinghua University: The Institute of Microelectronics of Tsinghua University is one of the leading institutions in the field of semiconductor research in China, and has published a large number of excellent research results in the field of semiconductors.
1, program encryption can be combined with AES algorithm, in the program operation, through the external chip AEThe S key encrypts the data to verify the correctness of both sides, which is called contrast authentication. Encrypted data can be transmitted in ciphertext after AES encryption, and then decrypted after arriving at the secure end to implement data transmission security control.
2, can be widely used in automotive electronics, security access lock, safe box, financial network security, identity authentication and authorization management and other fields.
3, TPM security chip can be a wide range of encryption in addition to the traditional boot encryption and hard disk encryption, the TPM security chip can also log in to the system, application software