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The identification method of the matrix keyboard has been discussed in the 51 matrix keyboard identification. Now let's talk about the difference between the PIC microcontroller and the 51 microcontr...[Details]
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Keysight network analyzers must have their instrument performance verified and evaluated before use, and network analyzers also require regular measurement and calibration during their life cycle. ...[Details]
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As FPGA performance and capacity improve, the use of FPGAs to perform DSP functions is becoming more and more common. In many cases, processors and FPGAs are used together in the same applicati...[Details]
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As the automotive industry continues to adopt 48V systems in hybrid electric vehicles (HEVs), the need for signal isolation in vehicle networks becomes more important. Without reliable and effective ...[Details]
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The second China International Import Expo (hereinafter referred to as "CIIE") was grandly opened at the Shanghai National Exhibition and Convention Center from November 5 to 10, 2019. Rohde & Schwar...[Details]
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Introduction
Most of the contemporary LCD displays use cold cathode fluorescent lamp (CCFL) backlight or LED static backlight. Since CCFL brightness is difficult to control and has a slow res...[Details]
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On January 16, the "2021 China IC List" jointly organized by the China Semiconductor Investment Alliance and Jiwei.com was officially announced in Beijing. Shanghai Si Rui Technology Co., Ltd. (herei...[Details]
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MOSFET is widely used in analog circuits and digital circuits, and is inseparable from our lives. The advantages of MOSFET are: first, the driving circuit is relatively simple. The driving current ...[Details]
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The kernel version is 2.6.19.
1. Before the Boot loader jumps to the kernel, it must complete
(1). The CPU must be in SVC (supervisor) mode, and both IRQ and FIQ interrupts are disabled;
(...[Details]
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CPSR: Program Status Register (Current Program Status Register) cpsr is used to store condition codes when programming at the user level The CPSR contains condition code flags, the interrupt disabl...[Details]
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Today I will share with you a novel solar LED light controller circuit diagram. The main function of this solar LED light controller is to use solar panels to charge the battery during the day, and...[Details]
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Keysight Technologies Inc. (NYSE: KEYS), a leading technology company that helps enterprises, service providers and governments accelerate innovation to connect and secure the world, announced that ...[Details]
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#include reg52.h #include stdio.h #define uchar unsigned char #define uint unsigned int sbit LED = P2^2; void timer_init() { TMOD |= 0x01; TH0 = 0x4C; TL0...[Details]
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Used to measure the ambient temperature around the chip. The voltage output by this temperature sensor is proportional to the temperature. To obtain the temperature, the ADC is used to measure this v...[Details]
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Constant pressure water supply inverter is an automation device widely used in water supply systems. It achieves constant water supply pressure by adjusting the speed of the motor. When using const...[Details]
Analog electronics
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