The MCS-51 microcontroller instruction system uses a total of 7 addressing modes, including register addressing, direct addressing, immediate addressing, register indirect addressing, indexed addressing, relative addressing, and bit addressing.
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Recommended ReadingLatest update time:2024-11-17 00:50
What are the differences in the P0~P3 port structures of the MCS-51 microcontroller?
What are the differences in the structure of the P0 to P3 ports of the MCS-51 microcontroller? What should be paid attention to when using them as general I/O ports to input data?
Answer: P2 port is a dual-function port. It is a general I/O port and a high 8-bit address port when accessing external memory in bus mod
[Microcontroller]
MCS-51 MCU scanning matrix keyboard program
#include reg52.h
#define uint unsigned int
#define uchar unsigned char
sbit DSCQ=P2^6; //bit defines the segment latch control terminal
sbit WSCQ=P2^7; //bit definition bit latch control terminal
uchar code table ={0x3f,0x06,0x5b,0x4f, //0,1,2,3
0x66,0x6d,0x7d,0x07, //4,5,6,7
0x7f,0x6f,0x77,0x7c, //8,9,a,
[Microcontroller]
Realizing fireworks function with dot matrix screen based on MCS-51 single chip microcomputer
Do you remember the wonderful moment when the fireworks burst? When I was a child, whenever I watched the fireworks burst, I always hoped that I could keep the most beautiful moment forever. Finally, today my dream came true. With my own board, I can do it with just a few programmings!
Before showing you the ef
[Microcontroller]
MC9S12XS MCU Principle and Embedded System Development
51 MCU Overview
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He Limin Column
Microcontroller and Embedded Systems Bible
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
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