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The spherical photometer is an efficient and fast device for measuring the luminous flux and luminous efficacy of LED products . It is currently the most important device for measuring the luminous ...[Details]
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Available in PCB and chassis mount encapsulated plastic enclosures, these AC/DC power supplies meet the demanding requirements of building automation, industrial and IT applications and are ideal for...[Details]
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At present, people usually measure abdominal pressure by measuring bladder pressure. This method is to insert a catheter into the bladder, slowly infuse about 50ml of saline into the bladder, and the...[Details]
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In order to meet the needs of the teaching process, highlight the characteristics of aviation, and create a teaching situation environment that integrates "teaching, learning, and doing", a simple fli...[Details]
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The testing of communication protocols and applications is a very critical and difficult problem in the field of communication. It has become one of the most active areas in communication protocol e...[Details]
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Code:
#include reg52.h
typedef unsigned char uint8;
typedef unsigned int uint16;
sbit acon=P1^0; //upper 8-bit address line
sbit bcon=P1^1;
sbit ccon=P1^2;
sbit acon1=P1^3; //lower 8-bit a...[Details]
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Since the beginning of the year, the price war between car companies has intensified, and behind the price war is the fact that car companies have compressed the cost of complete vehicles to the extr...[Details]
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It is reported that Zhou Shouzi, former senior vice president of Xiaomi Group, resigned from his position as executive director of the group for personal reasons, effective March 24, 2021. Accordin...[Details]
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This review starts with the Tamron 28-75mm F/2.8 Di III RXD from last year: thanks to its excellent portability, large aperture of F2.8 and good image quality, the author has watched this lens rise f...[Details]
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The three-phase uncontrolled rectifier in Figure 1 is replaced by a controllable converter, and three high-frequency choke reactors are connected in series at the three-phase power input end to suppr...[Details]
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As the global PCB industry develops towards high precision, high density and high reliability, product updates and iterations are accelerating. At the same time, the focus of the PCB industry has shi...[Details]
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Before judging whether the inverter is good or bad, remove the power input line and load output line. It only takes 15 seconds to judge whether the inverter is good or bad.
1. First, set...[Details]
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Hardware platform: stm32f407 Library file: STM32F4xx_DSP_StdPeriph_Lib_V1.6.1 Serial port: USART6 TX & RX STM32F4 has two DMA controllers mounted on the AHB bus. Each DMA control...[Details]
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The electronic blood pressure monitor is a device that needs power supply. Its power supply is usually AA-type ordinary batteries or rechargeable batteries, or it can use an adapted voltage-stabilized...[Details]
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CNC lathe is a highly automated machine tool, widely used in the field of mechanical processing. In the programming of CNC lathe, M code (auxiliary function code) plays a very important role. M99 i...[Details]