A diode matrix is a two-dimensional grid of wires: each "intersection" wherein one-row crosses over another has either a diode connecting them, or the wires are isolated from each other. Computer memory and data storage types

The Connected Diode Matrix example demonstrates how to use a matrix format to reduce the number of necessary GPIO pins when using six or more LEDs. This specific example uses nine LEDs and six GPIOs to form and control a 3 × 3 LED matrix. The matrix format creates a grid that uses two GPIOs per LED (or diode).

Diode Matrix Encoders. Where encoders are needed for non-standard applications, they can also be implemented using a diode matrix, such as the decimal-to-BCD 2421 encoder shown in Fig 4.4.4. In this example, as any one of the ten switches …

When connecting a logic circuit with the outside world, incoming information from a keyboard or other input device must be changed (encoded) into an appropriate binary form. Also before binary data produced by the digital system can be used by an output device, such as a display, it must be decoded. into a form that can be used by the display.

Build a Diode Matrix A diode matrix can simplify a few model railroad wiring tasks including: • Combining multiple signal inputs to control an “interlocking” signal section. • Lining-up turnouts for a single route into multiple tracks. A diode matrix works well when using twin-coil switch machines. It can be adapted for motorized

Using a Diode Matrix for OTHER TURNOUT MOTORS or other things like Accessory decoders. While they were initially conceived for simplified control on analog layouts using twin coil solenoid type turnout motors, a Diode Matrix can also be used for control and route setting of many other devices that offer an option for switched control.

The diode matrix is shown below. The orange lines are the outputs from the '139 part, as AD0, AD1, AD2, and AD3. It will output 0v (active low) on only the selected line, and +v for the three other outputs.

Diode Matrix Decimal-to-binary encoder.. The switches left to right correspond to the decimal numbers from 1 to 9, as any one of the nine switches is closed will be seen by the output as logic 4 binary digits.

Diode Matrix Encoders Where encoders are needed for non-standard applications, they can also be implemented using a diode matrix, such as the decimal-to-BCD2421 encoder shown in Fig 4.4.4. In this example, as any one of the ten switches …

- customer number assignment for specific diodes or schema - Great EMC protection - Surge protection 24Vdc to 400Vdc in option Applications - Keyboard interface for PLC - Discrete logical function - Alarms grouping • Many design available: Decimal to binary Decimal to BCD Decimal to Gray or according to customer specifications up to 32 inputs