Digital Voting Machine
A 3-input voting machine is an electronic device that takes three binary inputs
and produces a single binary output based on a predefined logic. This
presentation will explore the fundamental concepts and design of such a voting
machine using basic logic gates.
by I.SHAILESH
Basic Logic Gates: AND and OR
AND Gate OR Gate
The AND gate produces a HIGH output only when all The OR gate produces a HIGH output when any of its
its inputs are HIGH. It is used to implement the inputs are HIGH. It is used to implement the logical
logical conjunction operation. disjunction operation.
Truth Table Representation
Input A1 Input A2 Input A3 Output
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 1
1 0 0 0
1 0 1 1
1 1 0 1
1 1 1 1
Logic Diagram Design
1 Input Mapping
Assign the three inputs to the 3 AND gates
as shown in logic diagram.
(A1.A2,A2.A3,A1.A3)
2 Gate Connections
Connect the 3 outputs’ of the AND gates’ to
the OR gate to implement the desired
logical operations.(A1.A2+A2.A3+A1.A3)
3 Output Determination
The final output based on the connected logic
gates is GLOWIING OF LED HERE (OUTPUT=
A1.A2+A2.A3+A1.A3)
Circuit Implementation with Logic Gates
Input A1 Input A2 Input A3 Output
Apply the first input Apply the second Apply the third input The circuit produces
to the circuit. input to the circuit. to the circuit. the final output based
on the logic gate
connections.
Inputs and Outputs of the Voting
Machine
Inputs Output
The 3-input voting machine accepts three The voting machine processes the inputs
binary inputs (0 or 1) representing the and produces a single binary output (0 or
votes or decisions. 1) representing the final decision or result.
Functionality and Applications
Elections Decision Making Automation
The 3-input voting machine can It can also be applied in any The voting machine can be
be used in electoral systems to scenario where a binary decision integrated into automated systems
tally votes and determine the needs to be made based on to streamline decision-making
outcome. multiple inputs. processes.
Conclusion and Key Takeaways
1 Simple Yet Powerful 2 Broad Applications 3 Further Exploration
A 3-input voting machine The voting machine The design of voting
demonstrates the versatility concept can be applied in machines can be expanded
of basic logic gates in various fields, from to include more inputs,
implementing complex electoral systems to additional logic operations,
decision-making processes. industrial automation. and advanced features.
