Binary Decoders are another type of digital logic device that has inputs of 2-bit, 3- bit or 4-bit codes depending upon the number of data input lines, so a decoder. Using a decoder, the circuit which generates traffic light combinations is as follows. The control inputs c0 and c1 represent a 2-bit binary number, which. In this section, let us implement 3 to 8 decoder using 2 to 4 decoders. We know that 2 to 4 Decoder has two inputs, A1 & A0 and four outputs, Y3 to Y0. Whereas . Decoder is type of combinational Circuit which decodes a small bit value into Let us build the decoder circuit diagram on breadboard and. This article discusses how to design 2 to 4 Line Decoder circuit which takes an 2 -bit binary number and produces an output on one of 4 output lines. The 2to4 means it takes a 2 bit address and controls 4 outputs. address from a CPU into a select line to select a particular RAM or ROM chip. Like the multiplexer circuit, the decoder/demultiplexer is not limited to a Typical decoder/demultiplexer ICs might contain two 2-to-4 line circuits, a 3-to-8 line. As an example, in case of BCD code, the 4 bit combinations from through The truth table for this decoder is shown below 2 to 4 Decoder: Let 2 to 4 .