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According to Bloomberg Asia, Microsoft President Brad Smith said on September 8 that the way the US government treats Huawei is not American at all, and such measures should not be taken without soli...[Details]
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The global laptop market has grown rapidly in the era of "mobile work and learning" triggered by the epidemic. According to data from industry tracking agency Counterpoint Research, global laptop sal...[Details]
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With the continuous innovation and breakthrough of science and technology, the original business forms of various industries are undergoing earth-sharing changes. From the "Internet +", "sharing econ...[Details]
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CoreEngine Technology officially launched its automotive chip brand "Dragon Eagle" and "Dragon Eagle No. 1" smart cockpit chip in Wuhan. It has officially taken a big step towards the automotive inte...[Details]
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The serial port of the AT89C51 (compatible with MCS-51) microcontroller can expand multiple 8-bit parallel I/O ports using a shift register chip in mode 0. In the LED dot matrix display application s...[Details]
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1 Introduction
The rapid development of home appliances, portable electronic devices and handheld appliances has made power adapter chips a major product category of integrated circuits. Since...[Details]
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Definition of equivalent salt density of insulator: The equivalent of soluble salt in the dirt attached to the surface of the insulator is the distribution density of NaCl mass, and the unit is mg/...[Details]
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Purpose: When the development board (JZ2440 V3) starts the CPU from Nand flash after power-on, the CPU will copy the first 4K data of Nand flash to the 4K internal SRAM called "Steppingstone" (starti...[Details]
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Did you ever think that integrated digital signal processors (DSPs) in audio amplifiers were only used for digital filters, equalization, or audio mixing? The reality is that integrated DSPs in mod...[Details]
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Using an operational amplifier to drive a high-precision ADC
Most high-precision analog-to-digital converters (ADCs) do not have high-impedance inputs. The input signal is connected directly to a s...[Details]
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Timer T0 is used to generate timing pulses. A positive pulse with a width of 2 machine cycles is generated every 2ms, and this timing sequence pulse signal is output by P1.0 (assuming the clock fr...[Details]
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Apple will not limit its use of LTPO screens to just one “iPhone 13” model, with one analyst insisting the display technology will be used in multiple 2021 iPhone models. After Apple used LTPO scre...[Details]
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“Hey Mercedes, where is the best beach for swimming nearby?” “You can go here to swim, sunbathe or surf. Alternatively, you can take a walk, have a picnic, or just relax and read a book. If you’re fu...[Details]
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MCU and peripheral circuits
Figure 5 MCU and peripheral circuits
Figure 5 shows the microcontroller and its peripheral circuits. The microcontroller is AT89C55 from ATMEL, which has a 20K-byt...[Details]
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1) Electrical isolation
When the floating ground potential of the driving circuit is different from the source potential of the driven switch tube, the driving method should be potential isola...[Details]