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　　4 Thermal conductivity and emissivity of heat dissipation materials 　　4.1 Thermal conductivity of heat dissipation materials 　　The thermal conductivity of a material reflects the strength of the ma...[Details]

    As more and more units use the whiteness colorimeter YQ-Z-48A, the standard of the instrument becomes very important, because the standard is the basis for reference of each unit. However, many us...[Details]

　　The STC89C516RD microcontroller contains 1280 bytes of RAM data storage, which is sufficient for general applications. However, since the system uses a real-time multi-tasking operating system RTOS...[Details]

arch_call_rest_init rest_init pid = kernel_thread(kernel_init, NULL, CLONE_FS); pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES); cpu_startup_entry(CPUHP_ONLINE); The creation pr...[Details]

NXP products are widely used in cars. I have been in the automotive industry since I graduated. Freescale products are the most used in cars, while Infineon products are adopted at the car factory lev...[Details]

W79L658A is a 4T 8051 microcontroller series. W79L658A provides an operating voltage range of 3.0V to 4.5V, built-in ADC, supports in-system programming (ISP) and in-circuit emulation (JTAG), and is...[Details]

At 9:30 am on July 16, 2019, with the ringing of the opening bell, Shanghai Quectel Communications Technology Co., Ltd. (stock abbreviation "Quectel Communications", stock code: 603236) officially li...[Details]

Study Notes for      STM32F103C8 redesigned  by  zhang  bin 2012-10-30 versions：V-0.1 All  Rights  Reserved   main.c is as follows, with detailed comments. You can basically use it afte...[Details]

start.S file: .globl _start _start:     // 0 address      b reset // When reset, the cpu jumps to address 0      ldr pc, =undefined_instruction // When the cpu encounters an unrecognizable instructio...[Details]

The microcontroller pointer source program is as follows: #include reg52.h bit cmdArrived = 0; //Command arrival flag, that is, receiving the command sent by the host computer unsigned char cmdInde...[Details]

Tianyancha shows that Shanghai Ideal Wanlihui Thin Film Equipment Co., Ltd. (Ideal Wanlihui) has recently undergone industrial and commercial changes. Ideal Energy Equipment (Shanghai) Co., Ltd. has ...[Details]

    The PC control circuit of a direct current (DC) motor is shown in Figure 1. This circuit is connected to the PC and controls the speed and rotation direction of the DC motor through the PC paral...[Details]

According to the latest report released by Technavio, the global electric vehicle battery market will have a compound annual growth rate of nearly 23% from 2019 to 2023, with a cumulative scale growt...[Details]

Generating signals to characterize, test, or troubleshoot an electrical design or system can be tedious and time-consuming. So, our experts have come up with four tips to help you generate simple or ...[Details]

Analysis of LCD working principle: 1. LCD hardware architecture: LCD hardware system: You can see that the LCD controller is in the ARM processor, and the LCD screen and p...[Details]