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Optical fiber communication has gained popularity due to its advantages of large capacity, high quality of information transmission, long transmission distance, stable performance, strong anti-elec...[Details]
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While loops are located in the Structure sub-palette "Programming → Structure → While Loops", and also in the palette "Express → Execution Control → While Loops", as shown in Figure 1. The usage and...[Details]
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Among the ARM on-chip resources, the memory is very small. In order to run the operating system and large applications, it is necessary to expand the ARM storage interface, such as SDRAM, SRAM, ROM, ...[Details]
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This paper presents a novel, fully automatic digital display design for measuring RF frequency by using the pre-divider SAB6456A and the high-speed digital divider 74HC390, combined with the ne...[Details]
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A friend of mine bought another oscilloscope, but he said that the new oscilloscope had problems because the signal he measured was very different from the previous one, and the square wave was serio...[Details]
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How to light a lamp Proceed as follows 1. Look at the schematic diagram to determine the pins that control the LED 2. Check the main chip manual to determine how to set/control the pins The chip ...[Details]
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The rapid digitalization of corporate environments, the surge in complex cyber threats, the evolving security regulations, and the rise of quantum computing technology have created huge...[Details]
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AT89cxx encryption principle
MCU decryption is simply to erase the encryption lock bit in the MCU. Due to the unreasonable design of the erase operation timing of the AT89C series MCU. It is poss...[Details]
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1. How to choose PCB board?
The selection of PCB materials must strike a balance between meeting design requirements and mass production and cost. Design requirements include electric...[Details]
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C51 compilation warning "*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL" *** WARNING L1: UNRESOLVED EXTERNAL SYMBOL SYMBOL: ?C_START MODULE: .STARTUP.obj (?C_STARTUP) *** WARNING L2: REF...[Details]
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1. Introduction:
Induction heating technology has the advantages of high heating temperature, high heating efficiency, fast speed, easy control of heating temperature, easy mechanization, au...[Details]
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Problems encountered: The same serial port configuration code can be output normally on one 407 development board, but garbled characters appear when it is switched to another 407 development board. ...[Details]
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Previously, microprocessors (MPUs) and microcontrollers (MCUs) were two distinct devices, with MPUs supporting rich software systems such as Linux and related software stacks, while MCUs would...[Details]
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With the rapid development of information technology, high-capacity storage chips are increasingly developing towards large capacity and small size, among which SD cards and Micro SD cards are prom...[Details]
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The traditional measurement value transfer verification system began to reflect the following deficiencies:
(1) The highest measurement standard is a physical object (for example, the kilogra...[Details]