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Recently, Han's Laser, which has always been favored by foreign investors, seems to be having a hard time. Not only has its performance declined sharply, but it is also facing questions about investm...[Details]
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The simulation consists of three parts: meter, measurement circuit and transfer switch. There are generally four scale lines on the meter head of an analog multimeter, which represent resistance, vo...[Details]
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On March 1, Microsoft announced that Dr. Hou Yang will succeed Alain Crozier as Chairman and CEO of Microsoft Greater China, leading Microsoft's strategy, sales and marketing operations in Greater Ch...[Details]
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Some time ago, someone suddenly asked me how the SysTick_Handler(void) timer interrupt handler function is defined? Based on my previous experience, I feel that there should be something similar to a...[Details]
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When writing microcontroller programs, interrupts are inevitable. I prefer to write microcontroller programs in C, which is simple and readable, but of course the program efficiency is not as high as ...[Details]
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PIN diodes are commonly used as variable attenuators for RF signals in TV tuners and broadband RF in fixed communications equipment. These diodes can be mounted on a circuit board as discrete devic...[Details]
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The physical picture produced is as follows: The circuit schematic is as follows: Schematic 1. Introduction of the work Based on 51 single chip microcomputer, ultrasonic sensor is used to mea...[Details]
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In order to analyze the use of ARMv7 architecture registers, ARMv7 assembly is generated using C program and analyzed. 1. The C source code is as follows (for simplicity, the function is very simpl...[Details]
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Before getting into the official content of this talk, I want to talk about why you should learn to use an oscilloscope when doing auto repair. Many people have questions. I can use a multimeter to m...[Details]
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Maxim's MAX3946 is a +3.3V multi-rate low-power laser diode driver with a data rate of up to 11.3Gbps. It supports SFF-8431 SFP+ MSA and SFF-8472, with a power consumption of 225mW at 3.3V, program...[Details]
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Diodes Incorporated Launches Automotive-Qualified LED Driver to Simplify Tail Light Design
Plano, Texas, USA, June 30, 2021 - Diodes Incorporated has introduced the AL5873Q t...[Details]
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Digital filtering is to smooth the collected signal through a certain algorithm program. Here we collect each data four times. The algorithm removes the highest and lowest values and takes the arit...[Details]
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Electrolyte analyzers can measure the potassium (K), sodium (Na), chloride (C1), calcium (Ca), pH value, etc. in biological specimens such as serum, plasma, whole blood, and diluted urine, and pr...[Details]
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According to Jiwei.com on March 11, the OPPO Find X3 series will be released tonight, and the hardware parameters of the series have also been exposed on the Internet. Image source: Weibo According...[Details]
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1. Set obj and src
ifneq ($(OBJTREE),$(SRCTREE))
ifeq ($(CURDIR),$(SRCTREE))
you :=
else
dir := $(subst $(SRCTREE)/,,$(CURDIR))
endif
obj := $(if $(di...[Details]
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