Or Gate Project

A PROJECT REPORT ON “ Build a Circuit for OR GATE”
‘‘Subject: Digital Techniques’’
SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD

OF
DIPLOMA IN
COMPUTERTECHNOLOGY
SUBMITTED TO
MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION, MUMBAI
SUBMITTED BY
Sr.n Name of Student(s) (Full Roll

o Name) no.
1 Atharva supate 2203
2 Asiya inamdar 2240
3 Anand chandanshive 2261
4 Samadhan satpute 2267
5 Onkar mhamane 2268
GUIDED BY
Prof. Landge P.P
Bramhadevdada Mane Polytechnic, Belati ,Solapur
2022-23
CERTIFICATE
This is to certify that the Micro Project entitled “Build a circuit for OR GATE in subject ‘‘Digital
Techniques” was submitted to the Bramhadevdada Mane
Polytechnic, Belati, Solapur in partial fulfilment of Diploma in Computer
Technology is a record of original work done by Roll no. 2203 , 2240 , 2261 , 2267 , 2268 during
the period of 17August to21 December.
Head Of the Department. Signature of the guide
INDEX
Sr. No. Content Page No.
1 Introduction 4
2 Aim 4
3 OR Gate truth table 4
4 Material required 5
5 Circuit Diagram 5
6 Working 6
7 Conclusion 6
8 Resources
Introduction
The Logic OR Gate is a type of digital logic circuit whose output goes HIGH to a logic level 1 only when one or
more of its inputs are HIGH.
The output, Q of a “Logic OR Gate” only returns “LOW” again when ALL of its inputs are at a logic level “0”.
In other words for a logic OR gate, any “HIGH” input will give a “HIGH”, logic level “1” output.
The logic or Boolean expression given for a digital logic OR gate is that for Logical Addition which is denoted
by a plus sign, ( + ) giving us the Boolean expression of: X+Y = Z.
Thus a logic OR gate can be correctly described as an “Inclusive OR gate” because the output is true when
both of its inputs are true (HIGH). Then we can define the operation of a 2-input logic OR gate as being:
“If either X or Y is true, then Z is true”
Aim
Aim of this project is to demonstrate the working of two input OR gate using diode and LED.
OR gate truth table

Material required
Diode:- A diode is an electronic component with two electrodes. It allows electricity to go through it only in
one direction.
Resistor:-The resistor is a passive electrical component to create resistance in the flow of electric current.
LED:- An LED produces light when electricity flows through.
Battery:- A 9V dc battery is used to power this circuit.
Battery snap connector:- To connect the battery terminals to the rest of circuit.
Soldering Iron:- To solder the various components used in this project.
Switches:- For controlling the input to the circuit.

Sr no Material Specification Quantity
name
1 Battery To supply the power 1
2 Wires Wire is used for connected 10
3 LED An LED produces light when flows through 1
4 Switches For controlling the input to the circuit 2
5 Card board Attach all deviceses 1
Circuit Diagram
Working
• When X=0 Y=0
When both the input is zero i.e. no switch is turned on, no current flows through the LED. Thus LED
remains off, giving us no output. Hence Z=0
• When X=1 Y=0
In this case diode D1 is connected to the positive terminal of the battery and diode D1 becomes forward
biased allowing current to flow through LED which in turn turns on the LED. Hence Z=1
 When X=0 Y=1
In this case diode D2 is connected to the positive terminal of the battery and diode D2 becomes forward
biased allowing current to flow through LED which turns on the LED. Hence Z=1
 When X=1 Y=1
In this case both diodes D1, D2 is connected to the positive terminal of the battery. Both diodes D1, D2
becomes forward biased allowing current to flow through LED which turns on the LED. Hence Z=1
Conclusion
Logic gates are used to develop many IC circuit or microprochips in today’s modern world.
We conclude that, Logic gates or circuits can be implemented by using electronics components (diodes,
transistors & resistors etc) and verified by the helps of Boolean expressions, truth tables, and logic diagrams.
Without logic gates,electronic world would be nearly incomplete!
Resources
 www.google.com
 www.electronics-tutorials.ws
 www.simple.wikipedia.org
 www.images.google.com
 www.microcd.in

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A PROJECT REPORT ON “ Build a Circuit for OR GATE”

‘‘Subject: Digital Techniques’’

SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD

Sr.n Name of Student(s) (Full Roll

Bramhadevdada Mane Polytechnic, Belati ,Solapur

Techniques” was submitted to the Bramhadevdada Mane

Polytechnic, Belati, Solapur in partial fulfilment of Diploma in Computer

Head Of the Department. Signature of the guide

3 OR Gate truth table 4

“If either X or Y is true, then Z is true”

OR gate truth table

LED:- An LED produces light when electricity flows through.

Battery:- A 9V dc battery is used to power this circuit.

Soldering Iron:- To solder the various components used in this project.

Switches:- For controlling the input to the circuit.

1 Battery To supply the power 1

2 Wires Wire is used for connected 10

3 LED An LED produces light when flows through 1

4 Switches For controlling the input to the circuit 2

5 Card board Attach all deviceses 1

• When X=0 Y=0

• When X=1 Y=0

 When X=0 Y=1

 When X=1 Y=1

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