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LED dimming can be done in two ways: analog dimming and pulse width modulation (PWM) dimming . Analog dimming simply adjusts the DC current in the LED string to change the LED's light output, whi...[Details]
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The environment of this article is as follows: OS system: Ubuntu 12.04 (originally 10.04, recently upgraded) Compiler: avr-gcc Burning software: avrdude Debugging software: avarice, GDB and d...[Details]
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1. EMI sources of switching power supplies
The EMI interference sources of switching power supplies are mainly reflected in power switch tubes, rectifier diodes, high-frequency transforme...[Details]
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Improving accuracy has been a goal of vector network analyzer (VNA) measurements since the earliest days. VNA accuracy can be extended from the instrument port to the end of the test cable through ca...[Details]
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How to do it: 1. Assembly: Take out the leak detector host and the test probe handle and connect them, then press the power button on the host panel to turn on the device. 2. Power on: After po...[Details]
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Since June 2020, driven by the strong terminal market, LCD TV panel prices have continued to rise, and have been rising for 13 consecutive months, ushering in the longest price increase cycle in near...[Details]
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The rapid development of electronic information technology has brought new opportunities to the storage industry. More and more companies have begun to deploy in the field of solid-state drives, and ...[Details]
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Linux kernel is 2.6.32.2
Source code analysis tool source insight
Preface: It is very simple to operate several GPIO ports in a bare metal machine, just configure the control registers an...[Details]
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Since the advent of the AVR microcontroller, it has received widespread attention. It is a high-speed microcontroller that uses a reduced instruction set and uses the clock cycle as the machine c...[Details]
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We have all learned about 51 MCU in college. 51 is also the first processor we come into contact with in embedded systems. Its structure is not complicated. When we study 51 MCU, we can clearly descri...[Details]
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Abstract: This paper introduces a keyboard extension method using DM642 and CPLD. CPLD manages the chip logic in the keyboard circuit, and the external interrupt of DM642 monitors the status of the...[Details]
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Following the disclosure of Xiaomi Group’s third quarter 2019 financial report, which brought certain benefits to its stock price, whether its full-year performance in 2019 can exceed expectations an...[Details]
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Yokogawa's award-winning WT5000 high-precision power analyzer Released its new current sensor unit and upgraded the firmware The WT5000 high-precision power analyzer has been further enhanced with...[Details]
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In order to realize transparent transmission between the computer and the microcontroller, we must first understand the WiFi module. Test whether the wifi module is normal Use a serial cable to con...[Details]
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LED screens have appeared as early as the 1960s, but full-color screens did not appear until the mid-1990s. The price of this technology has dropped significantly in recent years, and the resolutio...[Details]