I use WIN 6.0, and the system can switch between Chinese and English. The Chinese characters in the QR code are displayed as garbled characters when switched to Chinese, but they are displayed normall...
1. Use two dual four-to-one data selectors and NAND gates to realize the conversion from cyclic code to 8421BCD code. 2. Use a 74LS148 and NAND gates to realize the 8421BCD code priority encoder and d...
Now there is another small project that uses FPGA to collect data, and after data processing, transmits it to the server via Ethernet. I am responsible for the Ethernet data transmission part, because...
I installed a cracked version of PROTEL DXP2004, but I cannot create a PCB PROJECT. The phenomenon is: 1. I double-clicked New Blank PCB Project under Home/Printed Circuit Board Design/PCB Projects an...
Security PPP is a new model of urban video surveillance projects: 1) The government and social capital establish a project company in a certain proportion; 2) The project company participates in the ...[Details]
Overview
Lightning is a strong discharge phenomenon that occurs between thunderstorm clouds and between thunderstorm clouds and the earth due to severe convective weather. Lightning is gen...[Details]
This program uses the eight-channel ADC single acquisition mode. According to the configuration, ADC12SC will automatically reset after the conversion is completed in the single mode, so it is necess...[Details]
I used the bit definition in my 51 program: bit flag. After defining it this way, I ran the program and downloaded it to the circuit board. I found that the flag was not the value I set, which led to...[Details]
The Vatican Secret Archives is one of the world's greatest historical collections, but many of its documents have never been transcribed. Recently, a project called Codice Ratio used a
combination...[Details]
1. Common knowledge about DMA. 1. Function: to achieve high-speed data transmission between chips. That is, it can achieve data transmission without occupying the CPU. 2. Mode: There are three tran...[Details]
Interrupts and timers implement a 24-hour clock. The program is as follows: #include reg52.h #define PORTLEN P0 sbit bit_select = P2^0; sbit seg_select = P2^1; unsigned char src = {0x3f,0x06,0...[Details]
Title: Use two dynamic digital tubes to display from 0 to 60, output from the P1 port of 89C51, without adding a decoder, and directly connect the digital tubes. Note that they are dynamic digital tu...[Details]
Take serial port interrupt as an example: like: void serial() interrupt 4 { } and void serial_uart() interrupt 4 { } The functions of both functions are to define the serial port interrupt function. ...[Details]
5.1. Usage of EM78 series 8-bit microcontroller special instructions 5.1.1. Table Lookup Instructions and Usage The EM78 series 8-bit microcontroller uses three steps to look up the table: (1) "call"...[Details]
HT48R50A 5X7 LED dot matrix display example program ; ******************************************** ; Function: 5X7 LED dot matrix display sample program * ; MICroProcessor : HT48R50A-1/28SKDIP...[Details]
introduction In recent years, with the rapid development of optoelectronic technology, lasers have been widely used in various fields such as medicine, national defense, and measurement. The ch...[Details]
AVR microcontroller is a RISC microcontroller launched by Atmel in 1997. RISC (Reduced Instruction Set Computer) is relative to CISC (Complex Instruction Set Computer). RISC does not simply reduce in...[Details]
Embedded System
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