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1. Reference tutorial: Qingxiang 51 microcontroller tutorial 2.Achievement effect: Use the keys of an independent keyboard to control changes in digital tube numbers. 3. Basic principles **Featur...[Details]
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The core of the circuit is composed of a DC tone control IC, an NPN transistor and four resistors. The other components are peripheral components required by the DC tone control IC itself. Most DC ton...[Details]
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At a recent internal meeting of Huawei, Huawei Consumer Business CEO Richard Yu revealed that Huawei's global smartphone shipments this year will be around 230 million units. If nothing unexpected ha...[Details]
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Why do we need PWM subdivision? Because it can make the stepper motor run smoothly, reduce noise, increase speed (MAX), increase torque...
Why do we emphasize that it is a 51 single-chip microcompute...[Details]
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NPD DisplaySearch Shanghai Office, August 21, 2012 - In April 2013, LG Electronics of South Korea launched its first curved OLED TV. LG Electronics emphasized the effect of the 55-inch screen, t...[Details]
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TTL integrated logic gate circuit
3.3 TTL integrated logic gate circuit
3.3.1
TTL NAND gate 1. Working principle of TTL NAND gate
1. Circuit structure
2. Working principle
2. W...[Details]
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WASHINGTON (Reuters) - U.S. President Donald Trump met with Apple CEO Tim Cook on Thursday to discuss trade and other hot-button issues facing technology companies as Trump considers whether to follo...[Details]
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Xiaomi released the Redmi 9T phone overseas, equipped with a Qualcomm Snapdragon 662 processor and a 6000mAh large battery. The 4GB+64GB version is priced at 159 euros. IT Home learned ...[Details]
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Recently, the core material required for Honeycomb Energy's cobalt-free batteries, the cobalt-free cathode material, has officially started to roll off the production line in Changzhou Materials Fa...[Details]
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On June 11, CCTV-4 (Chinese International Channel) conducted a real-car experience and interview report on the application of Beidou high-precision positioning system in the Internet of Vehicles at S...[Details]
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Technical indicators of gas Roots flowmeter
Usage conditions
Ambient temperature: -30℃-+60℃ Medium temperature: -40℃-+85℃
Relative humidity: 5%-95% Atmospheric pressure: 70Pa-106kPa
Nominal diam...[Details]
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Abstract: This paper proposes a design scheme of LED lighting system which can realize automatic switch and brightness adjustment according to the changes of ambient light intensity, infrared and t...[Details]
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The transformer of a single-ended
flyback
switching power supply
is essentially a coupled inductor, which is responsible for energy storage, voltage transformation, and energy tran...[Details]
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Although it is convenient to write programs in C or C++ under Linux, the assembly source program is used for the most basic initialization of the system, such as initializing the stack pointer, settin...[Details]
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JPEG (Joint Photographlc Experts Group) is a static image data compression standard with a wide range of applications. It is currently widely used in image processing in cameras, printers, etc. In ...[Details]