A buzzer is a small, simple output device that produces sound. It converts electrical signals into audible tones, making it an essential component in many electronic devices for alerting or signaling users. Buzzers are commonly used in alarms, timers, and various types of notification systems to provide audio feedback or warnings. They can emit different types of sounds, such as beeps, chirps, or continuous tones, depending on the design and application. Buzzers are valued for their simplicity, reliability, and effectiveness in drawing attention to a specific event or condition. Buzzer has 2 pins, one is digital and another is ground.
A 16 by 2 LCD (Liquid Crystal Display) is a small screen that shows text. It can display up to 16 characters across and has 2 rows of text, making a total of 32 characters visible at once. These displays are handy for projects where you need to show words or numbers clearly, like in digital clocks or small gadgets. They often have a backlight for easy viewing in different lighting. You can connect them to devices like Arduino or Raspberry Pi to control what shows up on the screen, making them useful for DIY electronics and learning projects.
