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Just set the test range of the multimeter to the highest range of the AC range (1000 or 500, etc.) or higher than the voltage to be measured. Place it on the low-voltage distribution cabinet in the c...[Details]
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Schematic diagram:
Different pins of the P port are selected through 2-4 decoding; 74LS139 gives +5V voltage, the output high level is above +4.5; the output low level is below 3.5V;
If SW1 is ...[Details]
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1 Introduction
LED is called the fourth generation of lighting source or green light source. The light emitting device of LED is a cold light source, which has the characteristics ...[Details]
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Under the premise that the system clock is 72MHz, the system tick interrupt is configured to have a 1ms period.
#define SYSCLK_FREQ 72000000
void SysTick_Configuration(void)
{
//Will generate...[Details]
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I wonder if any of my car friends have bought new energy vehicles? Have you ever worried about the range? My family still drives a fuel car, but my brother bought a pure electric car. When my family ...[Details]
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China Energy Storage Network:
Recently, the Australian Renewable Energy Agency (ARENA) announced a number of grants, investing a total of A$160 million to support the development of energy ...[Details]
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"Big screen, quad-core, ultra-thin, etc." have become the standard features of flagship phones, which also puts high demands on battery design. Nowadays, even if a phone is left unattended for half a...[Details]
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On May 7, according to Korean media The Elec, SK Hynix is sending test wafers to Tokyo Electron (TEL) to test the latter's low-temperature etching equipment, which is expected to be introduced in...[Details]
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Introduction In the early 1980s, Intel launched the MCS-51 microcontroller. Later, Intel released the 8051 core to many semiconductor manufacturers in the form of patent transfer, resulting in many ...[Details]
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Nordic Semiconductor joins CSA Connectivity Standards Alliance China Member Group to promote smart home connectivity in China Will work with other member companies to promote the implementation o...[Details]
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Shanghai, China - May 25, 2023 – China Electronics Exhibition and Information Communication Co., Ltd. (hereinafter referred to as China Electronics Exhibition) has joined forces with Shanghai Tsinghu...[Details]
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Special symbols corresponding to the meaning of instructions
= DCB allocates a continuous byte storage unit and initializes it with the specified data
& DCD allocates a continuous word storage unit...[Details]
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Last time, we introduced two future in-vehicle technologies in the preview of future in-vehicle technologies: six major technologies (Part 1). Next, let’s continue to talk about two other technologie...[Details]
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This article introduces in detail the basic knowledge of serial port, ISP download of 51 single-chip microcomputer, etc. Those who have already learned single-chip microcomputer can also take a look...[Details]
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On the morning of November 5, 2024, Dalian Rongke Energy Storage Group Co., Ltd. held a donation ceremony for the Rongke Energy Storage Education Fund and Yanhui Scholarship at the Sixth Junior High S...[Details]
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