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LEGEND(description)
HSE = Hight-speed external clock singal
HSI = Hight-speed internal clock singal
LSI = Low-speed external clock singal
LSE = Low-speed internal clock singal
HSE is an ext...[Details]
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Gboard is the Google keyboard app available on both Android and iOS platforms. On December 19, according to foreign media reports, many Android users complained about the Google keyboard app...[Details]
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The program and circuit refer to the book below. The program is modified by myself based on this book, and the circuit is basically the circuit in this book. The back EMF zero crossing is detected ...[Details]
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The STM32 watchdog has two WWDG and IWDG. The biggest difference between the two is that IWDG has only one lower limit for feeding, while WWDG, as the name implies, must be fed within a range to ensu...[Details]
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Today, digital blogger @数码闲聊站 revealed that in addition to the Snapdragon 888 having a 4G version, the upgraded SM8450 (or Snapdragon 888 Pro) will also have a 4G version. In addition, digital bl...[Details]
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;Assembly instruction experiment
;Keyboard scanning
; 4X4 matrix keyboard
;Four input pins: EINT0 -----( GPF0 )----INPUT
; EINT2 -----( GPF2 )----INPUT
; EINT11-----( GPG3 )----INPUT
; EINT19---...[Details]
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Recently, the Federation of Korean Industries released a report titled "Global
Robotics
Industry and Korea's Influence", which stated that among the major countries in the world, China's ro...[Details]
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This paper proposes a design scheme of a two-color clock without hands based on a single-chip microcomputer. The hardware of this scheme uses the AT89S51 single-chip microcomputer as the control cor...[Details]
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Portable medical devices that diagnose health problems in and outside the physician's office or hospital are rapidly increasing. Portable healthcare devices help medical professionals monitor vital...[Details]
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Usually, we use keil5 to develop 32 and keil4 to develop 51. But it is too cumbersome to switch versions. Here is a method to make keil5 compatible with 51 programs. Only for the keil5 series that ha...[Details]
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The live cable identification instrument is used to identify a specific cable in a bundle of cables during the installation, migration, maintenance and troubleshooting of power cables. It has the c...[Details]
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O Introduction
The design of outdoor photovoltaic grid-connected inverters must be both reliable and waterproof and able to discharge the heat generated by power devices out of the box. If...[Details]
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Recently, CNET reporter Stephen Shankland visited Intel's chip manufacturing plant in Arizona and shared photos of Intel's new generation of mobile chips, Meteor Lake processors. Today, the latest ne...[Details]
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Types of explosion-proof motor cooling systems
1. Air cooling system
Air cooling is the most commonly used cooling method for explosion-proof motors, including self-cooling, self-fan cool...[Details]
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A soft starter is an electrical device used to start a motor. It can effectively reduce the current shock during starting and extend the service life of the motor and equipment. There are two main ...[Details]
Test/Measurement
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