digital electronics lab
TRANSCRIPT
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BABU BANARSI DAS NATIONAL INSTITUTE OF
TECHNOLOGY AND MANAGEMENT LUCKNOW
Department of Electronics and Communication Engineering
DIGITAL ELECTRONICS LAB I, II (EEC/ECS-352/452)
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TABLE OF CONTENTS
INTRODUCTION ............................................................................................................................... 3
EXPERIMENT LIST (AS PER GBTU) ................................................................................................... 4
DIGITAL ELECTRONICS LAB I ........................................................................................................ 4
DIGITAL ELECTRONICS LAB II ....................................................................................................... 4
MAJOR EQUIPMENTS ...................................................................................................................... 5
DIGITAL ELECTRONICS LAB I ........................................................................................................ 5
DIGITAL ELECTRONICS LAB II ....................................................................................................... 7
DESCRIPTION OF SOME MAJOR TRAINER KITS...............................................................................9
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INTRODUCTION
This lab continues exploration of transistor switching circuits to include CMOS logic gates, latches, and flip-flops. We will perform shift-register and counter circuits using small arrays of flip-flops. The two logic states are designated “0” (low) and “1” (high) and defined electronically by fixed voltage levels. The low-state is usually the reference or ground potential in the circuit, and the high-state is some positive voltage such as +5 V. A logic “gate” takes one or more logic-level inputs and produces a single logic-level output. The output is also a logic level, so the output of one logic gate can connect to the input of one or more other logic gates.
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EXPERIMENT LIST (AS PER GBTU)
DIGITAL ELECTRONICS LAB I(EEC-352)
Introduction to digital electronics lab- nomenclature of digital ICs,
specifications, study of the data sheet, concept of Vcc and ground,
verification of the truth tables of logic gates using TTL ICs.
Implementation of the given Boolean function using logic gates in both SOP
and POS forms.
Verification of state tables of RS, JK, T and D flip-flops using NAND & NOR gates.
Implementation and verification of Decoder/De-multiplexer and Encoder using logic gates.
Implementation of 4x1 multiplexer using logic gates.
Implementation of 4-bit parallel adder using 7483 IC.
Design, and verify the 4-bit synchronous counter.
Design, and verify the 4-bit asynchronous counter.
Mini Project.
DIGITAL ELECTRONICS LAB II(EEC-452)
TTL Transfer Characteristics and TTL IC Gates.
CMOS Gate Transfer Characteristics.
Implementation of a 3-bit SIPO and SISO shift registers using flip-flops.
Implementation of a 3-bit PIPO and PISO shift registers using flip-flops.
Design of Seven segment display driver for BCD codes.
BCD Adders & Subtractors.
A L U
8085 Assembly Language Programming.
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MAJOR EQUIPMENTS
DIGITAL ELECTRONICS LAB I(EEC-352)
MAJOR EQUIPMENTS
DESCRIPTION OF MAJOR EQUIPMENTS
1. Digital IC trainer Kit
2. Digital IC trainer Linear Kit
3. Programmable Counter by
using (IC-74193)
4. Full Adder / Substractor
5. Digital Multimeter
6. DC Power Supply(0-30)
7. Dual Tracing power
supply(12V)
8. Function Generator
.Indicators - 10 TTL/CMOS Logic Level Inputs
with Dual Color LED indication for logic low
and logic high - 10 LED for output indication.
Clock Generator - Fixed Clock generation of
1Hz, 10Hz, 100Hz, 1KHz, 10KHz, 100KHz &
1MHz.
Pulse Generator - Logic Pulsar provides
single pole double throw bounce less pulses of
Low to High and High to Low transitions
Modulo N Programmable Counter by using
(IC-74193)
Full Adders & Subtractors using NAND gate..
Measuring parameters Instruments
These 0-30 Volt/10 Amps DC Regulated Power
Supply are made from very high quality raw
material which ensures hassle free work
performance at its user end. These 0-30
Volt/10 Amps DC Regulated Power Supply are
widely finds its applications in various
electrical sectors.
Fixed Output Voltage (Settable Over ±1
0% of Nominal Output Voltage). Preset
Positive & Negative Outputs Employing
Master / Slave Technique. Load & Line
Regulation: ±0.1 %. Ripple & Noise: 1
mV (r. m. s.) Max. Input Voltage: 230V
AC ±1 0%, 50Hz, Single Phase.
A function generator for producing an
output signal which varies as a prescribed
mathematical function of an input signal.
The generator comprises a bank of like
amplifying channels whose inputs are
connected in shunt relation, the input
signal being applied concurrently to all
channels.
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9. Flip-Flop trainer kit
10. Encoder /Decoder trainer
Kit
11. Multiplexer/De- Multiplexer
12. Logic Gate
13. Transfer Characteristics
(TTL/CMOS)
14. Fixed Power Supply(5V-
12V)DC
15. CMOS Inverter(Gate Delay)
16. Counter (IC-74190)
17. Adder/Substractor Trainer
Kit
Verification of state tables of RS, JK, T
and D flip-flops using NAND & NOR gates
Implementation and verification of
Decoder/Encoder
Implementation of 4x1 multiplexer And
De-Multiplexer.
Verification of the truth tables of logic
gates.
TTL Transfer Characteristics and TTL IC
Gates.
Fixed power Supply as a Input of 5V-12V
DC
CMOS Gate Transfer Characteristics.
Study of Counter and Shift Reristor.
Half /Full Adders & Subtractors.
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DIGITAL ELECTRONICS LAB II(EEC-452)
Lab/Major Equipment
Description of Major Equipments
1. Counter & Shift Register.
2. Digital IC Trainer
3. Multivibrator
4. Decoder (trainer)
5. Audio Function Generator.
6. Flip- Flop Trainer kit
7. Adder and Substractor.
8. Encoder and Decoder
9. Logic gate
10. CMOS Inverter ( gate delay)
11. TTL & CMOS Inverter
12. Multiplexer And De-
Multiplexer
13. Modulo & Programmable
Counter
Design, and verify the 4-bit synchronous counter.
It is common kit for performing practical.
Multivibrator using IC -555.
Implementation and verification of Decoder.
A function generator for producing an output signal
which varies as a prescribed mathematical function
of an input signal. The generator comprises a bank
of like amplifying channels whose inputs are
connected in shunt relation, the input signal being
applied concurrently to all channels.
Verification of state tables of RS, JK, T and D
flip-flops using NAND & NOR gates
BCD Adders & Subtractors.
Implementation and verification of Decoder/
Encoder
Verification of the truth tables of logic gates.
CMOS Gate Transfer Characteristics.
TTL Transfer Characteristics and TTL IC Gates.
Implementation of 4x1 multiplexer And De-
Multiplexer.
Modulo N Programmable Counter by using (IC-
74193)
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Description of Trainer Kits.
Digital Trainer Kit
Indicators - 10 TTL/CMOS Logic Level Inputs with Dual Color LED indication for logic low and logic high - 10 LED for output indication.
Clock Generator - Fixed Clock generation of 1Hz, 10Hz, 100Hz, 1KHz, 10KHz, 100KHz & 1MHz.
Pulse Generator - Logic Pulsar provides single pole double throw bounce less pulses of Low to High and High to Low transitions
Logic Probe - Logic Probe facility provided with LED indicators to indicate Logic High, Low & Tri-state
Potentiometers- Variable potentiometers of 1K, 10K 100K provided on board
Function Generator (using IC 8038). - Provides Sine, Square and Triangular output waveforms. - Frequency variable from 0-200 KHz in FIVE steps.
Power Supplies - Fixed DC Power Supply: +5V, ±12V. - Variable DC Power supply of +1.2V to +15V & -1.2V to –15V. - AC Power Supply of 15V-0-15V
Digital Multimeter
Digital Multimeters are great diagnostic tools used for a variety of jobs. They can be used to diagnose and find electrical faults in automotive and home electrical circuits, appliances, electronic devices and light switches. A digital multimeter is a small handheld device with a digital display and two probes. They are used to touch different parts of a circuit and test it. The results are displayed on the digital readout. A digital multimeter has its own power source. They can test for continuity, voltage, amps, and ohms.
DC Regulated Power Supply
These 0-30 Volt/10 Amps DC Regulated Power Supply are made from very high quality raw material which ensures hassle free work performance at its user end. These 0-30 Volt/10 Amps DC Regulated Power Supply are widely finds its applications in various electrical sectors. All electronic equipment include a circuit that converts ac supply into dc supply. The part of equipment that converts ac into dc is called DC power supply. In general at the input of the power supply there is a power transformer. It is followed by a rectifier (a diode circuit)a smoothing filter and then by a voltage regulator circuit., the basic power supply is constituted by four elements viz a transformer, a rectifier, a filter, and a regulator put together. The output of the dc power supply is used to provide a constant dc voltage across the load.
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Function Generator
A function generator is used for producing an output signal which varies as a prescribed mathematical function of an input signal. The generator comprises a bank of like amplifying channels whose inputs are connected in shunt relation, the input signal being applied concurrently to all channels. Each channel includes adjustable gain control means to vary the amplification slope thereof, and means to adjust the breakpoint thereof to vary the input level at which the channel is conductive. The output of each channel is fed through a separate polarity-reversing switch to a common summing amplifier whose output signal is functionally related to the input signal in accordance with the combined slopes of the amplifying channels as determined by their respective polarities
Oscilloscope Cathode Ray Tube
The oscilloscope cathode ray tube (CRT) is a vacuum tube that creates and deflects an electron beam to form a graphical image representing the electrical properties of a circuit. An oscilloscope (Figure 1) is used to test electrical devices by displaying a graph of the voltage between two points in a circuit over time. The CRT (Figure 2) displays this graph. Similar CRTs are used in radar systems, televisions, and computer monitors.
This document explains to the beginning engineering or physics student the structure and operating principle of the oscilloscope CRT.
A glass tube contains and encloses the oscilloscope CRT in a vacuum. The base of the tube plugs into the oscilloscope, while the other end flares to a large flat area that serves as the screen. An electron gun inside produces an electron beam that passes through two sets of deflection plates before hitting the fluorescent screen to create an image. This device operates by creating and accelerating a beam of electrons with an electric field. Another electric field between the deflection plates directs the beam to the desired location of the display. Finally, the fluorescent screen converts the energy of the electron beam into slowly emitted visible photons.
Four main parts make up the oscilloscope CRT: bulb, electron gun, deflection plates, and fluorescent screen.
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Flip-flop trainer kit
The Digital Electronic Trainer is intended OMEGA for elementary as well as advance training of digital electronics. The trainer cover regular digital circuits by solder less inter connections through use of 2 mm brass terminations and patch cords. Various clock generators, logic level input / output indicators and DC regulated power supply are in built. The unit housed in sunmica finished wooden box enclosure with provision for safe keeping of mains cord, patch cords and top lid for protection during storage.
Bread Board
A breadboard is a construction base for a one-of-a-kind electronic circuit, a prototype. Because the solderless breadboard does not require soldering, it is reusable, and thus can be used for temporary prototypes and experimenting with circuit design more easily. Other, often historic, breadboard types don't have this property.