Decoder

A decoder is a device which does the reverse operation of an encoder, undoing the encoding so that the original information can be retrieved. The same method used to encode is usually just reversed in order to decode. It is a combinational circuit that converts binary information from n input lines to a maximum of 2n unique output lines.

This example shows you the working of decoder in BinPy.

from __future__ import print_function
from BinPy.Combinational.combinational import *

decoder = Decoder(0, 1)  # Initializing a decoder object
print(decoder.output())

[0, 1, 0, 0]

decoder.setInput(1, 0)  # Input at index 1 is changed to 0
print (decoder.output())

[1, 0, 0, 0]

# Changing the number of inputs
# No need to set the number, just change the inputs
# Input must be power of 2
decoder.setInputs(1, 0, 0)

print (decoder.getInputStates())  # Get input states

[1, 0, 0]

print (decoder.output())

[0, 0, 0, 0, 1, 0, 0, 0]

# Using decoders with Connectors
conn = Connector()
decoder.setOutput(1, conn)  # Set Output of decoder to Connector conn
gate1 = AND(conn, 1)  # Put this connector as the input to gate1
print (gate1.output())

0

print (decoder) # To get information about the decoder instance

Decoder Gate; Output: [0, 0, 0, 0, 1, 0, 0, 0]; Inputs: [1, 0, 0];