A decoder isa logic
circuit that converts
coded inputs into
coded outputs.
An encoder is a device
that converts data from
one format to another.
5.
Digital electronics aremore important than analog electronics because
they are more accurate, reliable, and energy efficient. Digital signals are
less capable to noise and interference, making them more reliable in
transmission mediums like satellite TV and cell phone networks. Digital
data is also more compact and less likely to be corrupted, making it
easier to store and maintain over time.
Decimal to BCD
Encoder
OctalTo Binary
Encoder
Hexadecimal to
Binary Encoder
4 to 2 Encoder
There are many types of Encoders
10.
The logical expressionof the
term A0, A1, A2, and A3 is as
follows:
A3=Y9+Y8
A2=Y7+Y6+Y5+Y4
A1=Y7+Y6+Y3+Y2
A0 = Y9 +Y7 +Y5 +Y3 + Y1
11.
A Binary-to-Octal decoderhas three
input lines and eight output lines. When
a 3-bit input code is applied to the
decoder, one of the 8 output lines
corresponding to that input code is
activated. This decoder is also called a
3-line-to-8-line decoder or 1-of-8
decoder. Its truth table is given below.
13.
0
1
2
3
4
5
6
D
D
D
D
D
D
D
D
A B C
Ifthe input is A = B = C = 0(LOW)
Output D0
will be HIGH. So, the output
expression for
D0 = A’B’C’ Similarly
D1 =A’B’C
D2 =A’BC’
D3 = A’BC
D4 =AB’C’
D5 =AB’C
D6 =ABC’
D7 = ABC
14.
The Future ofEncoders and Decoders
•As technology advances, so too will the
complexity and sophistication of the
encoding and decoding schemes
employed.
•Look for continued innovation in areas
like error correction, data compression,
and encryption, as we strive to achieve
faster, more reliable, and more secure
communication and data storage
systems.