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Conversion between different bases, C language variable types and operators, Keil Debug usage and application and the realization of running lights 1. Binary, decimal, hexadecimal conversion 1.1 In...[Details]
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Some ARM9 CPUs have an SRAM integrated inside. SRAM is the abbreviation of Static RAM. It is a memory with static access function. It can save the data stored inside without refreshing the circuit. In...[Details]
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Many people cannot distinguish between the three display screens: LED, OLED, and LED backlight. Currently, many manufacturers have changed the concept when promoting their products. It is obviousl...[Details]
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//Another way to write a character device driver: #include "linux/device.h" #include "linux/module.h" #include "linux/kernel.h" #include "linux/fs.h" #include "linux/init.h" #include "linux/delay.h" ...[Details]
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1 Introduction
Lithium batteries have the advantages of high specific energy and low self-discharge, making them an ideal power source for portable electronic devices. In recent years, with the...[Details]
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Another NIO car caught fire. In an underground garage in a community in Jiading, Shanghai, a black NIO ES8 suddenly emitted a lot of smoke. Firefighters arrived in time, extinguished the smoke and ...[Details]
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1. Subtraction instruction with borrow bit SUBBA, Rn; (A) (A) - (Rn) - (C), the following are similar. SUBBA,direct SUBBA,@Ri SUBBA, #data Note: Clear C before subtraction. All subtraction instructio...[Details]
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Recently, the official WeChat account of Zhejiang Development and Reform Commission announced the list of provincial key construction projects and pre-arranged projects in 2020. In 2020, Zhejiang Pro...[Details]
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Electrostatic discharge generator and circuit
Causes of electrostatic discharge
There are many causes of electrostatic discharge, but IEC61000-4-2 (GB/T17626.2) mainly describes that in lo...[Details]
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S3C2440 has two boot modes: NORFLASH boot and NANDFLASH boot; but generally only boot from NANDFLASH. Since it is booted from this place, two conditions must be met: 1 There must be a program in th...[Details]
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Conductivity meter The conductivity meter is an online water quality analyzer with a wide temperature range and is developed for high-end water quality management and automation control in medica...[Details]
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Murata's first commercialized 3225-size wire-wound common mode choke coil for power lines that supports large current (maximum 1.2A) and wide bandwidth
Murata Manufacturing Co., Ltd....[Details]
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What is a crystal oscillator? The full name is quartz crystal oscillator, which is a high-precision and high-stability oscillator. Through a certain external circuit, it can generate a sine wave wit...[Details]
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Last time, I finished reading the boot assembly and prepared the C operating environment. Now I will start to learn the C source code and jump from the start.S file to the file
lib_arm/board.c ...[Details]
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To correctly and effectively select flow measurement methods and instruments, you must be familiar with the instrument and the characteristics of the flow meter used, and also consider economic facto...[Details]