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Apple spent $36.13 billion on semiconductors last year, surpassing Samsung to become the world's largest semiconductor buyer. According to statistics from research firm Gartner, global semicond...[Details]
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Recently, some domestic wafer fabs have been cut off from the supply of photoresist by Japan's Shin-Etsu Chemical and are facing a shortage situation. In addition, due to the shortage of chips and st...[Details]
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Introduction This article fixes the bug of STM8L library function GPIO_WriteBit. experiment platform Compiler software: IAR for STM8 1.42.2 Hardware platform: stm8l101f3p6 development board ...[Details]
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The relationship between "AEC-Q" certification and ISO26262 functional safety certification I found that many people are confused about the relationship between "AEC-Q" certification and ISO26262 f...[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, a sine wave with stable frequen...[Details]
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The word "tube" refers to the electron tube. The tube amplifier that everyone often talks about refers to the amplifier that uses the electron tube. Some electron tubes are used for amplification, and...[Details]
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How to use the theodolite
1. HR—right-hand (clockwise) horizontal angle, HL—left-hand (counterclockwise) horizontal angle.
2. Theodolite operation steps (optical centering method)
1. Set up the i...[Details]
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DC filament power supply for vintage radios
This DC power supply has many advantages for old-fashioned radios that use batteries as power sources, because the designed circuit can prevent damag...[Details]
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Code: #include reg52.h #define uchar unsigned char #define uint unsigned int sbit dula=P2^6; sbit wela=P2^7; uchar num,dunum,wenum; uchar code table_du ={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x07,...[Details]
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The commercialization process of 5G technology has always been the focus of the industry. Compared with the United States and South Korea, what progress has China made? After a week-long battle ...[Details]
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This article introduces in detail how the DU8608 chip realizes extremely high-precision LED constant current control based on non-isolated BUCK topology and source-driven MOSFET. Experiments have show...[Details]
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Market research firm TrendForce pointed out in its latest report that Samsung is currently affected by the lockdown in Xi'an mainly due to the difficulty in arranging manpower shifts. If the epidemic...[Details]
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I. Overview
Virtual instruments can be understood as a new instrument system designed by users according to their own needs, using existing computers, specially designed instrument hardware and ...[Details]
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Before the cut-off buffer circuit is cut off, the switch current is Io, the switch voltage drop is nearly 0, and the diode D1 is off. When the switch is cut off: when there is no capacitor , the switc...[Details]
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Mitsubishi PLC FX3U is a powerful small controller widely used in industrial automation. Its master control instructions are the core of program control. For programmers, it is very important to ma...[Details]
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