Design of liquid crystal digital voltmeter based on single chip microcomputer

2013 ◽  
Author(s):  
Wang Hui-feng ◽  
Liu Xiao-hua
Keyword(s):  
Liquid Crystal ◽  
Digital Voltmeter ◽  
Single Chip ◽  
Single Chip Microcomputer

Liquid Crystal Display Digital Clock Based on SCM

2013 ◽  
Vol 711 ◽  
pp. 598-601
Author(s):  
Juan He ◽  
Song Yue Yuan
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Display Design ◽  
C Language ◽  
Digital Clock ◽  
Design And Implementation ◽  
Allowable Error ◽  
Design Ideas

The single chip microcomputer with digital clock has been designed based on AT89C52, through the design ideas of multi-function digital clock, we have described the system hardware, software and the realization process.The display design and implementation of a year, month, day, time and second is achieved using C language. And the simulation is used by Proteus software. By comparing the actual clock, we have found out the source of the error and have determined the method of adjusting error, and we reduce the error as much as possible, so we can achieve the allowable error range for a practical digital clock in this system.

The Realization of the 1/2 Blanking in the 4-1/2 Digital Voltmeter Based on ICL7135 Chip

2014 ◽  
Vol 614 ◽  
pp. 249-253
Author(s):  
Guang Yuan Zhu ◽  
Wei Wei Hu ◽  
Yu Feng Sun
Keyword(s):  
Output Signal ◽  
Logic Gate ◽  
Digital Voltmeter ◽  
Program Control ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Microcomputer Program ◽  
Gate Circuit

It is necessary to realize the 1/2 blanking when designing the 4-1/2 digital voltmeter based on ICL7135 chip. The traditional digital voltmeter meters achieve the function by using the single-chip microcomputer program control. A new design should be considered when circuits are designed without the single-chip microcomputer. This paper combines the blanking terminal of the CD4511 decoding chip with the output signal of the A/D chip to design a complex logic gate circuit for realizing the blanking function. Experiment has been done to verify that the design of the complex logic gate circuit is feasible and it can guarantee the realization of the 1/2 blanking.

scholarly journals Design and Simulation of Voltage Measurement System Based on ADC0809

2021 ◽  
pp. 314-323
Author(s):  
Huiling Jin, Zhaohan Zhang
Keyword(s):  
Measurement System ◽  
Digital Voltmeter ◽  
Measurement Range ◽  
Digital Display ◽  
Single Chip ◽  
Voltage Measurement ◽  
Single Chip Microcomputer ◽  
Micro Power ◽  
Working Principle ◽  
Accurate Reading

The display of ordinary voltmeter is not clear enough, the measurement range is narrow and the anti-interference ability is weak. This paper studies the design and Simulation of voltage measurement system based on ADC0809. Combined with the actual production situation, using the function that ADC0809 has 8 analog inputs and can convert the analog input into digital display, this paper designs the circuit with single chip microcomputer chip AT89S51. Combined with the working principle of a / D converter and DC digital voltmeter composed of them, the voltage measurement of 0-10V is realized in this paper. The experimental results show that the measurement system has the advantages of accurate reading, wide measurement range and micro power consumption.

scholarly journals Drink-driving monitoring system based on single chip microcomputer and sensor

2021 ◽  
Vol 1750 ◽  
pp. 012037
Author(s):  
Yong Chen ◽  
Shudong Wang ◽  
Hao Wang ◽  
Shen Liu ◽  
Runqing Li
Keyword(s):  
Monitoring System ◽  
Single Chip ◽  
Single Chip Microcomputer

The Design of the NC Teaching Plotter Based on Single Chip Microcomputer

2014 ◽  
Vol 909 ◽  
pp. 342-345
Author(s):  
Xin Juan Shang
Keyword(s):  
Motor Control ◽  
Teaching Practice ◽  
Nc Machining ◽  
Numerical Control ◽  
Stepper Motor ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Nc Program ◽  
Practice Teaching ◽  
Stepper Motor Control

The NC Teaching Plotter is designed for the practice teaching needs of NC machining, In order to improve current existing practice teaching environment of "many student, less equipment". It explains the NC concept with concise way and demonstrates NC thought by the intuitive operation.In this paper, the design of NC teaching plotter makes interpolation motion between pen and table based on NC program in accordance with the requirement made by user, to draw the graphics by moving the magnet control brush painting through the single chip digital control and the two stepper motor control X, Y two axes feed. The NC teaching plotter which demonstrates more clearly and directly the numerical control idea has high practical value for teaching practice.

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