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On March 16, Huami Technology released its 2020 fourth quarter and full-year performance report, with fourth-quarter operating revenue of 1.973 billion yuan and shipments of 13.3 million units. Ima...[Details]
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For Apple, the SE series does not need to be updated so quickly, and an upgrade once every two years is completely acceptable. According to foreign media reports, information given by analysi...[Details]
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Several basic types of switching power supplies As the name implies, switching power supplies use electronic switching devices (such as transistors, field effect tubes, thyristors, etc.) to control ...[Details]
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1 Introduction
The digital battlefield is a new battlefield form proposed as the initial stage of information warfare construction after the emergence of the concept of "information warfar...[Details]
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There are only two external interrupt source input terminals in the MCS-51 series microcontroller. When there are more than two external interrupt sources, they must be expanded. Here are four simple...[Details]
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In the previous section, S3C2440 ported uboot to support NANDFLASH operations. This section modifies uboot to support DM9000. Table of contents Compile dm9000x into uboot through Makefile Compile...[Details]
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IEC (International Electrotechnical Commission) is one of the most authoritative international electrotechnical standardization organizations that develops international safety standards for electroni...[Details]
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The assembler provides some pseudo instructions. Pseudo instructions are not directly converted into operands but are used to adjust the location of the program in the memory. All pseudo instruction...[Details]
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When measuring the insulation value of a 10kV transformer using a ZC series portable megohmmeter, there are three common misunderstandings:
Misunderstanding 1:
The rated voltage of the megohmm...[Details]
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1. EQU instruction Definition: Used to assign a value or register name to a specified symbolic name. Format: Symbol name EQU expression Symbolic name EQU Register name Note: The expression must be ...[Details]
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The board is equipped with an EEPROM memory, model AT24C02. The hardware connection of the board is: SCL--- P2.4, SDA--- P2.5. Straightforward, paste the program! ========================24cxx.h文件...[Details]
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introduction As a power supply device for electronic equipment, switching power supply has the advantages of small size, light weight, high efficiency, etc., and has been widely used in digi...[Details]
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Timer/counter is one of the important resources of single-chip microcomputer, and the timer/counter of CC2530 has more working modes compared with the ordinary 51 series single-chip microcomputer. Ac...[Details]
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"The future is obviously the era of artificial intelligence, and its impact on vehicle design is also considerable. From the human era to the digital era, we attach more importance to the human facto...[Details]
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1. Immediate addressing
Immediate addressing is a special addressing mode. The operand itself is given in the instruction. The operand is obtained only when the instruction is fetched. This op...[Details]
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