A keypad is a set of buttons or keys arranged in a grid-like pattern, typically used for entering numbers, letters, or symbols into electronic devices such as phones, calculators, or security systems. It allows for quick and efficient input, with each key representing a specific character or function. The term “keypad” is derived from the words “key” and “pad,” emphasizing its function as a flat surface with multiple keys for typing or pressing. With the rise of touch screen technology, keypads have become a familiar and essential tool for navigating and interacting with various devices, making them an integral part of our daily lives.