4x4 Keypad (16-Key Matrix Membrane Type)

Overview: The Essential Component for User Data Entry. The 4x4 Keypad (16-Key Matrix Membrane Type) is an indispensable input device for creating custom user interfaces and control panels. This keypad is ABSOLUTELY ESSENTIAL because it provides SIXTEEN separate buttons (0-9, A-D, *, #) while requiring only EIGHT MICROCONTROLLER PINS to read, achieved through matrix scanning. This efficient design saves valuable digital I/O pins, making it a TRUSTED SOLUTION for data entry and password-protected systems.

Description Summary. The 4x4 Keypad (16-Key Matrix Membrane Type) is an input device essential for numerical and command data entry, password access, and user menu navigation in all microcontroller projects.

Key Technical Specifications (Datasheet Snapshot). - COMPONENT TYPE: Matrix Membrane Keypad.

• CONFIGURATION: 4 Rows x 4 Columns (Total 16 keys).

• INTERFACE PINS: 8 Output Pins (4 for Rows, 4 for Columns) for matrix scanning.

• KEYPAD LAYOUT: Standard *0-9, A-D, , # arrangement.

• ACTUATION: Membrane Type provides a flat, sealed, and durable interface.

• KEY FEATURE: SAVES MICROCONTROLLER I/O PINS through matrix scanning (requires only 8 pins for 16 buttons).

• PACKAGE: Flexible backing with a standard female header connector.

Applications: Interface and Security. This keypad is expertly suited for: Building PASSWORD-PROTECTED ACCESS SYSTEMS, creating CUSTOM CALCULATORS AND DATA ENTRY TERMINALS, implementing MENU NAVIGATION and settings input, and use in EDUCATIONAL KITS to teach matrix scanning and debouncing techniques.

Projectile Electronics Quality and Trust. We guarantee high-quality membrane keypads with RELIABLE CONTACTS and clear button feedback, ensuring your user interfaces are responsive and dependable. The 4x4 Keypad is a TRUSTED SOLUTION for data input. For any support or technical query, please contact Projectile Electronics at 01779-150816.

Package Includes: 1 × 4x4 Keypad (16-Key Matrix Membrane Type).