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vivo will launch the vivo V23e in India at 12 noon on February 21. 91mobiles revealed the information of this model, and the vivo V23e official website has been launched in India, showing the design ...[Details]
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In June this year, Huawei founder Ren Zhengfei said that Huawei will recruit 20-30 talented young people from all over the world this year, and plans to recruit another 200-300 talented young people ...[Details]
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Usually, our common lighting fixtures used in public places such as street lights, channel lights, and advertising light boxes often stay on all night, or they work during the day when lighting shoul...[Details]
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2.2 Burst control mode
Under light load conditions, this multi-mode switching power supply controller can also control the converter to work in Burst mode. In this mode, the power switch works fo...[Details]
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1 Overview The "Laigang Energy Metering Microcomputer Monitoring and Management System" developed by the Automation Department is a real-time data acquisition system that integrates energy metering m...[Details]
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hardware Controller side SROM controller No SFR registers (no need to configure SROM) Memory range: 0x1800_0000 0x1FFF_FFFF 128MB SROMC Bank 1 Hardware interface: SRAM interface Equipment side DM90...[Details]
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The power supply is a very important component in the lamp, also known as: driver. The quality of the power supply directly affects the service life of the lamp. If the LED lamp is compared to a pers...[Details]
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Three-channel DC resistance tester uses and features: This three-channel DC resistance tester can complete single-item measurement, three-channel simultaneous measurement, three-item test quantities,...[Details]
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Reason: The gain bandwidth product of the op amp used in the multimeter is not high enough.
Conclusion: 1) The multimeter can only measure low frequ...[Details]
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1. Overview of S3C2440 Serial Port Serial communication generally requires the addition of a level conversion circuit because the TTL/CMOS level is inconsistent with the RS232 level: TTL/CMOS level: ...[Details]
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According to a new research report released by Strategy Analytics, smartphone online retail channel sales will account for a record 28% of global smartphone sales in 2020, a 4 percentage point increa...[Details]
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Early testing shows that the new Ceramic Shield front panel on the iPhone 12 and iPhone 12 Pro appears to significantly improve the iPhone’s durability and scratch resistance. Apple says that Ceram...[Details]
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At present, the charging of portable electronic devices such as mobile phones, MP3 and laptops mainly adopts the traditional charging method of connecting one end to the AC power supply and the oth...[Details]
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1. The P1, P2, and P3 ports of the 51 microcontroller have their own pull-up resistors. If the P0 port is to be used as an I/O port, a pull-up resistor must also be added.
2. If you use the I/O port ...[Details]
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In the previous section, we have learned a lot about bare metal and built a project to test assembly code. These tasks are actually the basis for learning Bootloader here.
Index to this sectio...[Details]