1. Background and Significance
This paper addresses the common display requirements in microcontroller applications and compares the performance of five common display modules (seven-segment display, LCD1602, LCD12864, OLED, TFT). Through experimental testing, it provides a reference for selecting display modules in different application scenarios, which helps improve the performance of microcontroller application systems and reduce costs, thus holding significant practical application value.
2. Theoretical Principles
The paper uses the STC12C5A60S2 microcontroller as the control core, utilizing the DS18B20 temperature sensor to collect temperature data and display it through five different display modules (seven-segment display, LCD1602, LCD12864, OLED, TFT). By analyzing the resource usage, cost, and display effects of each module, it provides a theoretical basis for selecting suitable display modules for microcontroller application systems.
3. Experimental System and Conditions
The paper builds an experimental system based on the STC12C5A60S2 microcontroller to test and compare the performance of five common display modules. The experimental system includes the following components:
Control Core: STC12C5A60S2 microcontroller, responsible for controlling the entire system’s operation, including reading temperature sensor data and controlling the display module to show information.
Temperature Sensor: DS18B20, responsible for collecting environmental temperature data and converting it to digital signals for output.
Display Modules: seven-segment display, LCD1602, LCD12864, OLED, TFT, used for displaying temperature data.
Development Platform: Keil, used for writing and debugging microcontroller programs.
The DS18B20 sensor is connected to the STC12C5A60S2 microcontroller, and the microcontroller is programmed to read temperature data, which is then sent to different display modules for display. By observing and recording the display effects and performance indicators of each module, such as display clarity, power consumption, and cost, the advantages and disadvantages of different modules are analyzed to provide a reference for selecting suitable display modules.
4. Experimental Results and Analysis
The experimental results show that all five display modules can effectively display the current temperature value, but each has its advantages and disadvantages. The seven-segment display and OLED screen have advantages in cost and power consumption, but have limited display content; LCD1602 and LCD12864 screens provide rich content but consume more power; the TFT screen has the best display effect but has the highest cost and power consumption. Depending on actual application needs, suitable display modules can be selected.
The experimental results indicate that different display modules have their own advantages and disadvantages, and the appropriate module should be selected based on actual application needs. The seven-segment display and OLED screen are suitable for cost-sensitive applications; LCD1602 and LCD12864 screens are suitable for applications requiring rich content; the TFT screen is suitable for applications with high display effect requirements.
References:
[1] Shu Renyi, Xu Feng, Wang Jian, et al. Experimental Research on Display Modules Based on STC12C5A60S2 Microcontroller [J]. Journal of Langfang Normal University (Natural Science Edition), 2024, 24(03): 83-88.
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