he 4x4 Keypad is an essential input device for a wide range of electronics projects. Featuring 16 keys in a compact 4x4 matrix arrangement, it offers an efficient way to enter data or control systems in embedded applications. Ideal for DIY electronics, home automation, and microcontroller-based projects, this keypad is easy to integrate and provides reliable performance. Whether you're creating custom control systems, security devices, or learning about electronic interfaces, the 4x4 Keypad is the perfect solution for makers and professionals in Bangladesh.