This document describes a digital IC tester circuit that uses universal gates (NAND and NOR gates) to test integrated circuits. The circuit contains LEDs, resistors, 7400 and 7402 ICs, toggle switches, and a battery. It works by using the NAND and NOR gates to test if digital ICs operate correctly based on input signals to the gates. The IC tester is low cost, portable, and can test a variety of digital components like logic gates, flip-flops, and counters. Creating the circuit provided hands-on experience in designing PCBs, soldering components, and troubleshooting circuits.

1. NAGPUR INSTITUTE OF TECHNOLOGY
FACULTY :-
PROF. BHAGESHREE WANKHEDE
NIT POLYTECHNIC
MICRO PROJECT OF DIGITALTECHNIQUE
Presented By :-
Ashish Sadavarti

2. DIGITAL IC TESTER
USING UNIVERSAL
GATES

3. CONTENTS
 COURSE OUTCOMES
 INTRODUCUTION
 COMPONENT LIST
 CIRCUIT DIAGRAM
 WORKING OF CIRCUIT
 ADVANTAGES & DISADVANTAGES
 APPLICATION
 OUTPUT

4. COURSE OUTCOMES
 Understand the concept of DIGITAL IC TESTER
FOR UNIVERSAL GATES
 Understand the working of DIGITAL IC TESTER.
 Use boolean expression to realize logic gates
 Build simple combinational circuit

5. INTRODUCTION
• It is a Digital ICTester. An Integrated Circuit tester (IC tester) is
used to test Integrated Circuits (ICs). This IC tester can be used
to test a wide variety of IC’s which includes simple logic gates and
also sequential and combinational ICs like flip-flops, counters, shift
registers etc. It is portable and easy to use.
•

6. COMPONENTS LIST
COMPONENTS SPECIFICATION QUANTITY
LED 2
RESISTOR 330Ω 2
IC 7400 & 7402 2
SWITCH TOGGLE SWITCH 2
BATTARY 9 V 1
WIRE 0.6 MM DIAMETER AS PER REQUIRE
PCB - 1

7. CIRCUIT DIAGRAM
 It is a integrated circuit tester (IC
tester) is used to test integrated circuits
(IC’s).
 We can easily test any digital IC using
this kind of an IC tester.
 This IC tester is constructed using
UNIVERSALGATES(NAND & NOR) with
a switch and a LED unit.
 It can test digital IC’s having a ON/OFF

8. WORKING
 NAND GATE
A LOW (0) OUTPUT RESULTS ONLY IF ALL THE INPUTS TO
THE GATE ARE HIGH (1); IF ANY INPUT IS LOW (0), A HIGH (1)
OUTPUT RESULTS. A NAND GATE IS MADE USING TRANSISTORS
AND JUNCTION DIODES. THE NAND GATE IS SIGNIFICANT
BECAUSE ANY BOOLEAN FUNCTION CAN BE IMPLEMENTED BY
USING A COMBINATION OF NAND GATES.
 NOR GATE
THE NOR GATE IS A DIGITAL LOGIC GATE THAT IMPLEMENTS
LOGICAL NOR. A HIGH OUTPUT (1) RESULTS IF BOTH THE INPUTS
TO THE GATE ARE LOW (0), IF ONE OR BOTH INPUT IS HIGH (1), A
LOW OUTPUT (0) RESULTS. NOR IS THE RESULT OF THE NEGATION
OF THE OR OPERATOR.

9. ADVANTAGE
It will give the same
outcome, however,
the NOR gate gives
the advantage that it needs
little space, less material
and is less complicated. At
least one input must be
active to stop the output
power.
• Cost: NAND is cost-effective
per byte and has a high storage
capacity for its physical size. -
Endurance: NAND cells
eventually wear out as their
transistors degrade.
A NAND chip lasts until it
reaches its write-cycle limit,
after which it will no longer be
able to store new data

10. APPLICATION
 In arithmetic logic unit of processors
 Increment and decrement operators
 Calculate addresses
 Use in multiplexers
 Computer memory & registers
 Microprocessor

11. Skill Develop
• Basic circuit knowledge :- electronic circuit desire can become can become a very
complex topic especially where large installation are concerned. Become of this
basic circuit knowledge is very important
• Design pcb:-
 Basic understanding of pcb.
 Knowledge of fundamentals in basic electronic to design pcb for circuit like
digital ic tester circuit. etc.
 we understand that how to done etchingon plane pcb carefully and perfectly.
 Improved technical ideas and knowledge related fm radio circuit.
 Now I can able to do sholdering of components on pcb after this work is done.
 Develop mounting the components on pcb with correct terminal of them.

12. OUTPUT