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There are two ways to scan the single-chip matrix keyboard: The first one is the line-by-line scanning method, which is to scan line by line. The implementation code is as follow...[Details]
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How high is the cost of the catering industry? Data shows that the labor cost of the catering industry has increased by more than 27.6% in the past three years, and the growth rate of employees has...[Details]
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1 Development of domestic bank ATMs
Due to the special role of ATM (Automatic
Teller
Machine
,
hereinafter referred to as ATM) in banking business, by the end of 2007, the ...[Details]
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The circuit in this example is used to create a voltmeter that reads to 0.99V. The circuit uses a counter IC to drive two groups of four LEDs (Figure 1). Each of the two groups represents a BCD (bina...[Details]
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If there is any device that can replace smartphones in the future, the answer may be wearable devices. Sources revealed that Facebook has cooperated with Italy's Luxottica, the world's largest sung...[Details]
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Today, Redmi announced that the K50 series supports OIS optical image stabilization. Lu Weibing, President of Xiaomi Group China and General Manager of Redmi Brand, pointed out that this is ...[Details]
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As a new type of display device, OLED has been favored by many display device products due to its excellent performance and the price is constantly decreasing with the increase of production. High...[Details]
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The China Semiconductor Industry Association announced on March 11 that after several rounds of discussions and consultations, the semiconductor industry associations of China and the United States j...[Details]
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Developing towards high functionality and low cost
Figure 7: Development direction of LED headlights
There is a polarization between high-funct...[Details]
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A certain type of optical cordless mouse uses two AA alkaline batteries. It does not have a power switch. When not in use, it automatically switches the light source on and off at a low duty cycle ...[Details]
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1. Hardware Solution This design is a system that uses STC89C52 microcontroller as a controller, a stepper motor, a pyroelectric infrared sensor, an LED indicator light, and a buzzer. The pyroelectri...[Details]
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Introduction The phase-shifted full-bridge ZVS DC-DC converter is one of the most widely used soft switching circuits. As a phase-shifted full-bridge converter with excellent performance, the switc...[Details]
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The word industrial computer may be unfamiliar to many people, but do you know that it is closely related to our lives? When you go out by car, when you go shopping in a mall, when you play in a park,...[Details]
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With the development of technology, the power of LED is increasing, but the cost is decreasing. The key to ensure the long-lasting brightness of ultra-high brightness LED is to use low-cost and hi...[Details]
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As the power battery and electric drive system replace the traditional fuel and engine, the voltage of the entire system of pure electric vehicles increases from the traditional 12V to a system vol...[Details]