Decimal to BCD Encoder - Digital Electronics - Lecture Notes, Lecture notes of Digital Electronics

How decimal to BCD encoder works, truth table and applications

Typology: Lecture notes

2016/2017

Uploaded on 04/26/2017

honda-civic
honda-civic 🇮🇳

4.6

(44)

48 documents

1 / 3

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Decimal to BCD Encoder
INTRODUCTION
Encoders are the electronic equipment which converts one form of input into another one. Encoders are
used to generate a coded output from a single active numeric input. Encoders are widely used in various
devices like Calculators, Computers, Mobile phones, ATM machines and even also in our regular
Television. IC-74147 provides us facility to convert Decimal form of input into Binary form of output. As
it convert Human friendly numerical into machine friendly language i.e. in the form of ‘0’s and ‘1’s,
hence it is quite important to study about this invention in very serious manner to understand that how
this Decimal to BCD conversion operation perform. In our 21st century we get digitalized day by day and
decimal to binary Encoder performs very important role to communicate Human being with Machine.
DECIMAL TO BCD ENCODER DIAGRAM
In Decimal to BCD encoder binary output in the form of ‘1’s and ‘0’s which is calculated in encoder as
below:
Equations:
A=8+9
B=4+5+6+7
C=3+4+6+7
D=1+3+5+7+9
pf3

Partial preview of the text

Download Decimal to BCD Encoder - Digital Electronics - Lecture Notes and more Lecture notes Digital Electronics in PDF only on Docsity!

Decimal to BCD Encoder

INTRODUCTION

Encoders are the electronic equipment which converts one form of input into another one. Encoders are used to generate a coded output from a single active numeric input. Encoders are widely used in various devices like Calculators, Computers, Mobile phones, ATM machines and even also in our regular Television. IC-74147 provides us facility to convert Decimal form of input into Binary form of output. As it convert Human friendly numerical into machine friendly language i.e. in the form of ‘0’s and ‘1’s, hence it is quite important to study about this invention in very serious manner to understand that how this Decimal to BCD conversion operation perform. In our 21 st^ century we get digitalized day by day and decimal to binary Encoder performs very important role to communicate Human being with Machine.

DECIMAL TO BCD ENCODER DIAGRAM

In Decimal to BCD encoder binary output in the form of ‘1’s and ‘0’s which is calculated in encoder as below:

Equations:

A=8+

B=4+5+6+

C=3+4+6+

D=1+3+5+7+

WORKING PRINCIPLE OF DECIMAL TO BCD CONVERSION USING

IC-

In above figure we arrange a circuit of Decimal to BCD encoder. There are four OR gates are arrange in such a manner that they provides a Binary form of output when we give Decimal form of input. In above circuit we arrange 10 key point which is connected to the electric supply and provides decimal from of input to the circuit by passing voltage in a certain wire. Every wire is connected to the OR gate. We know that output of every OR gate is ‘1’ when at least one input is high.

Working of a circuit:

When we press key 5 then by pressing key the voltage in the key no.5 flows towards the wire which is connected to the key no.5, as the wire connected to the 2 nd^ and 4 th^ logical gate then logical gate no.2 and 4 provides output to the forward in the form of voltage. This working of a circuit perform Decimal to BCD conversion operation.

Which is sho wn in belo w truth table .

PIN- OU

T DI

AGRA

MES AN

D LO

GICA

LL TA

BLE