51 single chip microcomputer reset circuit composed of KIA7033-EEWORLD

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51 single chip microcomputer drives dot matrix 16*16 upward movement C program

#include reg52.h #define uchar unsigned char #define uint unsigned int #define LINE P0 //define line IO port, i.e. 74HC154 control terminal #define shudu 20 //word moving speed sbit DATA=P1^4; //74HC595 data terminal sbit CLK=P1^5; //74HC595 shift pulse terminal sbit CLKR=P1^6; //74HC595 data latch termina

[Microcontroller]

51 single chip microcomputer drives dot matrix 16*16 upward movement C program

Microcontroller learning: typical 8051 chip pins

　　Let’s start learning from 51, which is relatively old but is still widely used in classic applications. The following is a typical 8051 pin diagram. Figure 1.1 8051 pin diagram 　　The MSC-51 microcontroller, whose manufacturing process is HMOS (Reference Digital), uses a pin-only dual-in-line package. 12 clocks is

[Microcontroller]

Key recognition principle diagram based on C51 single chip microcomputer

　Each time switch SP1 is pressed, the count value increases by 1, and its binary count value is displayed through P1.0 to P1.3 of the P1 port of the AT89S51 microcontroller. 　　(1. Connect the P3.7/RD port in the "MCU System" area to the SP1 port in the "Standalone Keyboard" area; 　　(2. Use 8-core cable to connect

[Analog Electronics]

Key recognition principle diagram based on C51 single chip microcomputer

51 MCU I/O port read and write operations

MCS-51 microcontrollers usually have four 8-bit I/O ports. The data written to each port is written into the latch of the corresponding port, but there are two ways to read each port: read the latch and read the pin. 1 Read-Modify-Write Operation Pn (referring to P0, P1, P2, P3) is a special identifier in 51 assem

[Microcontroller]

51 MCU I/O port read and write operations

Directly drive LED display circuit based on C51 single chip microcomputer's I/O parallel port

As shown in Figure 13, P0.0 - P0.7 of the P0 port of the AT89S51 microcontroller are connected to the a - h segments of a common cathode code tube, and the common end of the digital tube is grounded. The digital tube displays 0 - 9 cyclically with a time interval of 0.2 seconds. 　　Use an 8-core cable to connect the

[Analog Electronics]

Directly drive LED display circuit based on C51 single chip microcomputer's I/O parallel port

Ultrasonic distance measurement with voice broadcast based on 51 single chip JQ6500

Function Description: 1. This design uses STC89C52 microcontroller as the main controller; 2. LCD1602 liquid crystal displays the measured distance and temperature; 3. With temperature compensation function (DS18B20 sensor); 4. The measuring range is 0.02m~4m, and the accuracy is 0.01m; 5. With real-time voice broadca

[Microcontroller]

Ultrasonic distance measurement with voice broadcast based on 51 single chip JQ6500

51 single chip microcomputer STC89C52 lights up multiple LEDs (byte operation of IO port)

Program source code /*-----------------------Include header file area-------------------------*/ #include reg52.h //MCU header file /*-----------------------Main function area-----------------------------*/ void main() { P2=0x0F; //The upper four bits of the P2 port output low level, and the lower four bits

[Microcontroller]

51 single chip microcomputer STC89C52 lights up multiple LEDs (byte operation of IO port)

MCS-51 microcontroller and CPLD/FPGA interface logic design

Functionally, microcontrollers and large-scale CPLDs are highly complementary. Microcontrollers have the advantages of high cost performance, flexible functions, easy human-machine dialogue, and good data processing capabilities; CPLD/FPGA has the advantages of high speed, high reliability, convenient development, and

[Microcontroller]

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