Displays are visual output components used to convey information, status, and interactive interfaces in electronic and embedded systems. They are available in various technologies, including LCD, OLED, TFT, e-paper, and LED, each chosen based on factors such as size, resolution, refresh rate, power consumption, and ambient viewing conditions. Displays connect to microcontrollers or single board computers through standard interfaces and protocols like SPI, I²C, parallel RGB, or HDMI, ensuring compatibility with a wide range of devices.

In IoT, industrial automation, consumer electronics, and smart devices, displays provide real-time feedback, data visualization, and interactive control options, improving system usability and decision-making. They are widely deployed in dashboards, control panels, industrial HMIs, smart appliances, wearables, and portable electronics. By presenting clear and intuitive visual information, displays enhance user experience, support operational efficiency, and simplify monitoring and control tasks.

Whether used for numeric readouts, graphical data, touch-based interfaces, or multimedia visualization, displays are critical for bridging the gap between complex system data and human operators. Their flexibility, clarity, and responsiveness make them essential components in modern embedded and connected solutions.