Electronic Design

Basic Circuit Eliminates Numeric Keypad Polling

Using eight digital inputs, this circuit simplifies decoding of the common membrane 4x4 keypad matrix and eliminates the traditional requirement of scanning rows or columns. Any X-Y switch matrix, ...
EDN

Optimal Membrane Switch Design

One style of low-profile keypad assembly is the conventional flexible membrane keypad where the switch circuitry is screen-printed. Silver conductive polymer inks are printed onto 1.25 mm (0.005 ...
Business Wire

Programmable Low-power GPIO/Keypad Controllers Simplify Interconnect Circuits for Large QWERTY Keypads

NORWOOD, Mass.--(BUSINESS WIRE)--Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications, introduced today the ADP5585 and ADP5589 GPIO ...
Electronic Design

Basic Circuit Eliminates Numeric Keypad Polling (.PDF Download)

Using eight digital inputs, this circuit simplifies decoding of the common membrane 4x4 keypad matrix and eliminates the traditional requirement of scanning rows or columns. Any X-Y switch matrix, ...