//This program function is: manual counter, when the button is pressed, the count is increased by one, and the LCD displays once (the result of the increase).
//Source program and proteus download address: http://proteus.5d6d.com/thread-9003-1-1.html
ORG 0000H
LJMP START
ORG 0030H
START: MOV DPTR,#TABLE ; Set the first address of the segment code
MOV R0,#00H ; Store the initial value of the count in R0
MOV P0,#3FH
MOV P2,#3FH ; When reset, the digital tube displays 0
S1: INC R0
CJNE R0,#100,S2
MOV R0,#00H
S2: JB P3.3,$ ; Wait for the button
LCALL DELAY ; Eliminate jitter delay
JB P3.3,S2
S3: MOV A,R0
MOV B,#10
DIV AB ; Separate the ones and tens of the count value
MOVC A,@A+DPTR
MOV P0,A
MOV A,B
MOVC A,@A+DPTR
MOV P2,A
JB P3.3,S1 ; Wait for the key to pick up
LJMP S3
DELAY: MOV R5,#20H ; Delay 10ms
D1: MOV R6,#250
DJNZ R6,$
DJNZ R5,D1
RET
TABLE: DB 3FH,06H,5BH,4FH,66H; 0-9 seven-segment code value
DB 6DH,7DH,07H,7FH,6FH
END
Previous article：Nested assembly method in C51
Next article：8*8 dot matrix display program (assembly)
- Popular Resources
- Popular amplifiers
OP413ARC/883
- Learn ARM development(16)There are many things to learn about ARM, and interrupts are definitely something that needs to be learned. Since the CPU introduced interrupts, it has truly entered the multi-tasking system and greatly improved work efficiency. ...
- Learn ARM development(17)Because all embedded systems use interrupts, how does my S3C44B0 interrupt the process? Then I need to understand the whole process. To understand it in depth, the best way is to write a program ...
- Learn ARM development(18)Last time, we have learned about the interrupt handling process of ARM and how to set the interrupt function. So, does it work like this? The answer is no. Because S3C44B0 has several registers that control ...
- Embedded system debugging simulation toolAfter the embedded hardware system is designed, it needs to be debugged. Whether it is hardware debugging, software debugging or program solidification, debugging simulation tools are needed. ...
- A small question that has been bothering me recently has finally been solved~~Recently, I have not been able to understand the concept of drivers very well. Sometimes I can get a feel for it by combining some USB examples written by others, but because the ARM system does not directly explain the pins like the microcontroller ...
- Learn ARM development (1)
- Learn ARM development (2)
- Learn ARM development (4)
- Learn ARM development (6)
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
- LED chemical incompatibility test to see which chemicals LEDs can be used with
- Application of ARM9 hardware coprocessor on WinCE embedded motherboard
- What are the key points for selecting rotor flowmeter?
- LM317 high power charger circuit
- A brief analysis of Embest's application and development of embedded medical devices
- Single-phase RC protection circuit
- stm32 PVD programmable voltage monitor
- Introduction and measurement of edge trigger and level trigger of 51 single chip microcomputer
- Improved design of Linux system software shell protection technology
- What to do if the ABB robot protection device stops
- Analysis of the application of several common contact parts in high-voltage connectors of new energy vehicles
- Wiring harness durability test and contact voltage drop test method
- From probes to power supplies, Tektronix is leading the way in comprehensive innovation in power electronics testing
- From probes to power supplies, Tektronix is leading the way in comprehensive innovation in power electronics testing
- Sn-doped CuO nanostructure-based ethanol gas sensor for real-time drunk driving detection in vehicles
- Design considerations for automotive battery wiring harness
- Do you know all the various motors commonly used in automotive electronics?
- What are the functions of the Internet of Vehicles? What are the uses and benefits of the Internet of Vehicles?
- Power Inverter - A critical safety system for electric vehicles
- Analysis of the information security mechanism of AUTOSAR, the automotive embedded software framework
- AD17 There is a problem with copper laying on a four-layer board
- Static Timing Analysis Basics and Applications
- How to use Segger Embedded Studio to develop the HPM6750?
- 485 Point-to-Many Communication Problem
- The program of the microcontroller is lost, what's going on?
- EEWORLD University Hall----Audio Amplifier for Smart Speaker
- Qorvo Expands 1.8 GHz DOCSIS 4.0 Portfolio
- Gain Circuit Compensation
- [Hua Diao Experience] 01 Getting Started with Xingkong Board
- Discharge needle under the common mode inductor
京公网安备 11010802033920号