Logic gates lab report pdf

Y a b logic symbol logic symbol of gates lab manual iv sem ece page3. In this the variable permitted to have only values true offalse usually written as 1 or 0. Laboratory manual digital systems and logic design. The output x of a circuit is a logic high only when input a is a logic low and input b is a logic high or input a is a logic high and input b is a logic low. Whether electronic or biological, logic gates sense and respond to signals in predetermined ways. We will see the different logic levels in ttl circuits, cmos circuits, some simple logic gates like or, not, nand, and, etc. Experiment logic gates or, and, not, nor and nand youtube. The output of and gate is true when the inputs a and b are true. To understand formulation of boolean function and truth table for logic circuits. So its output is complement of the output of an and gate. The nand and nor gates are called as universal gates, because it is possible to implement any boolean expression with the help of only nand or only nor gates.

Familiarize yourself with their logical and electrical characteristics and bring a copy to your lab. A universal gate is a gate which can implement any boolean function without need to use any other gate type. Lab report on basics logic gate free download as pdf file. Part 1 focuses on logic gates and part 2 on combinational logic.

Bright india public school affiliated to cbse curriculum investigatory project on logic gates guided by. Digital electronic logic gates lab report objective in this lab activity, the purpose was to use the nor and nand gates to implement several basic logic gates, and use the pulse waveforms to test xor and or gates. Draw the layout of the 4inverter chain using the quad nand ic. To study and verify the truth table of logic gates learning objective. Give such a table, can you design the logic circuit. Aims of the experiment the experiment was done mainly to study and verify the truth table of the logical gates. The output of an or gate assumes 1, if one or more inputs assumes 1. The following points should be addressed in the appropriate section of the lab report. Repeat task 2 of this report and state down your observations. Its an experimental project of freelance flash platform developer kris temmerman.

Describe the problem statement regarding farmer georgi. Basically, have a jumper wire connected to the slot directly under pin 7 of the gate being used, to the negative slot vertically below it which would basically be at the bottom portion of. A gate is an electronic device which is used to compute a function on a two valued signal. In practice, this is advantageous since nand and nor gates are economical and easier to fabricate and are the basic gates used in all ic digital logic families. Experimentally verify that your and gate is working properly by listing all input combination s and resulting outputs in truth. Introduction the ta will show you the emitter, base and collector for the transistor. These logic gates perform the basic boolean functions, such as and, or, nand, nor, inversion, exclusiveor, exclusivenor. Practical lab report 1, experiment 1 ecte233 uow studocu. They act as switches to allow or block the flow of digital data.

To acquaint yourself with the properties of and, nand, nor, and exclusiveor gates, the application of boolean algebra to digital circuitry, and transistortransistor logic ttl. Inputs and outputs of logic gates can occur only in two levels. Realization of logic functions with the help of universal gates nand gate. Digital electronics part i combinational and sequential. Also, applying the use of boolean algebra to implement a combination of 4 to 1 multiplexers to respond as an 8 to 1 multiplexer. We will introduce the most common logic gates in this section, including the and, or, xor, not, nor, and nand. Experience in designing a circuit using the 7400 series logic gates 5.

No formal pre lab submission is required for this lab assignment 4 lab procedure we will look at the behavior of logic gates in figure 1. This book is licensed under a creative commons attribution 3. Obtain the data sheets for each of the following ttl devices below. Use of switches as inputs and light emitting diodes leds or lcd liquid crystal display as outputs 3. The logic lab is a application for simulating simple circuits of logic gates on the screen. Introduction the three logical gates are and, or and not gate. Describe and, or or nand, nor logic gates realize logic gates belonging to different logic families such as dtl, ttl and cmos understand the factors that define the performance of a logic gate. Show the actual physical layout of the circuit top view on the. To implement an inverter using nand or nor gates 4. Also show their logic symbol, use the function in an equation and show the truth table for one gate in each of the integrated circuits. Insert a 7408 quad 4 in 1 package two inputs and gate ic into the logic lab breadboard 2. Aim to study about logic gates introduction logic gates are. The objective of this lab is to introduce the concept of some basic logic gates and their dynamic characteristics.

Lecture 3, simulated on multisim and in lab lab lecture 3 5 gate input results s1 s2 s3 s4 s5 probe 0 0 0 0 0 5. To study the truth tables of various basic logic gates 2. The action of logic circuits is usually summarized in the form of truth tables, which shows the output for the combinations of the input signals. The basic logic gates are the basic building blocks of more complex logic circuits. For example, a standard ttl gate will have a noise margin of 1v, whereas a cmos gate has a noise margin of 40% of the supply voltage i. By doing this the wiring and testing process will be done very easily in the lab. Digital electronics part i combinational and sequential logic. The reader will first see how logic gates can be constructed from transistors and. And, or, not nand and nor gates objective the purpose of this laboratory is to introduce the use and features of the logic lab unit ets7000 digital analog training system and to introduce the ttl integrated circuit and,or and not inverter gates. Pdf on jun 10, 20, sulieman baniahmad and others published digital logic. All lab work must be shown in the lab report for the following logic gates, verify the logic operation each gate performs. When the compilation is finished, a compilation report is produced.

These logical gates are the building blocks of all digital circuits. Transistor and logic gates laboratory instruction today you will learn how to use a transistor to amplify a small ac signal as well as using it as a switch to construct digital logic circuits. Measure the voltage of logic 1 or h and the voltage of logic 0 or l. Logic functions can be implemented in several ways. Introduction to digital logic with laboratory exercises 6 a global text. Show the actual physical layout of the circuit top view on the breadboard.

Acquiring design experience in using a truth table to implement a logic circuit 4. To get acquainted with different standard integrated circuits ics. Part 1 of the laboratory is conducted on week 3 and part 2 is on week 5. Wire and operate logic gates such as and, or, not, nand, nor, xor. The exor gate can have two or more inputs but produce one output. Nand gate is actually a combination of two logic gates. Logic gates are the digital circuits with one output and one or more inputs. This experiment is designed to reinforce the students exposure to the. Describe in your lab report each of their functions.

Logic gates lab report logic gate computer engineering. The objective for conducting these experiments, is to see how the operation of logic gates work. Lab report on basics logic gate logic gate digital electronics. This gate can have minimum two inputs, output is always one. These two levels are term high and low, or true and false, or on and off, or simply 1 and 0. Lab report for experiment, typed, including introduction, methods, results and conclusion. For on campus students, please contact your local teaching staff to arrange suitable time for these laboratory sessions.

Thus operation of or gate is based on the following rules. Digital electronics logic gates lab report example. You must prepare for this lab by designing and drawing the schematic diagrams ofthe following circuits, made up entirely of nand gates. The digital information is implemented using boolean algebra in which variables have only two states i. Familiarize yourself with their logical and electrical characteristics and bring a copy to your lab session.

Nand gates can be combined to form other logic gates. Each of these gates is embedded in an integrated circuit package. This lab manual provides an introduction to digital logic, starting with simple gates and building up to state machines. And, or, not, nand, nor, exor and exnor they work according to certain logic. To acquaint yourself with the properties of and, nand, nor, and exclusiveor gates, the application of boolean algebra to digital. To study about logic gates introduction logic gates are related with boolean algebra, which differ from both ordinary and binary algebra. Algebraic manipulation as seen in examples karnaugh k mapping a visual approach. The purpose of this lab report is to teach the student how to apply the use of multiplexers to implement a boolean expression. This experiment is designed to reinforce the students exposure to the following. Implementation of the given boolean function using logic gates in both. What r do you use in your led logic probe and how much current is flowing through the led. Synthesis of logic circuits many problems of logic design can be specified using a truth table. For example, when typing on a keyboard, pressing the shift key and the a key produces an uppercase letter a.

Include in your report the boolean explanation as done in the or example, figure. The output of an or gate assumes 0, if both inputs assumes 0. A truth table is a table showing all possible values at the inputs of a digital circuit and the corresponding value of the output. This needs to be done for each of the four integrated circuits ics chips. Presently logic functions are performed by tiny integrated circuits ics.

Experiment 1 basic logic gates dalhousie university. Lab report on basics logic gate logic gate digital. Implementation and verification of decoderdemultiplexer and. Check if pin 7 of each logic gate for each lab, is grounded. Lab 02 basic logic gates chiachun tsai objectives understand a module of digital system and all the components on the module understand basic logic gates, not, and, or, nand, nor, xor, and xnor and their truth tables. Basic logic gates and, or, and not gates objectives find, read and cite all the research you need on researchgate. Jan 16, 2018 physics investigatory project class 12 on topic logic gates. Instead of creating the circuit using basic logic gates, one can write the vhdl code. The operation of logic gates is normally done by logic digital integrated circuits ics. Perform these experiments and get your first working experience with dld. Logic and gate tutorial with logic and gate truth table. Basic logic gates implementation using breadboards and discrete gates introduction.

These rules, taken together, form the basis of boolean algebra, which you studied in depth in elec 2200 digital logic circuits. Basically logic gates are electronic circuits because they are made up of. Consult the datasheets of each component for the pinouts, electrical and timing characteristics of these circuits. Jan 01, 2017 logic gates using discrete components. Pdf digital logic designs experiments suddiyas nawaz. They are the basic building blocks of any logic circuit. Consult the datasheets of each component for the pinouts, electrical and timing characteristics of. Logic gates logic gates combine individual bits according to certain rules. Experiment 2 basic logic gates implementation using breadboards. Follow the lab report guidelines laid out in the eg1003 writing style guide in the technical writing section of the manual. Design a logic circuit with three inputs a, b, c and one output f such that f1 only when a majority of the inputs is equal to 1. Logic minimisation any boolean function can be implemented directly using combinational logic gates however, simplifying the boolean function will enable the number of gates required to be reduced.

Construct the inverter chain, using a wire to apply either vdd5vlogic 1 or vss0vlogic 0 to the chain input. Construct the inverter chain, using a wire to apply either vdd5v logic 1 or vss0v logic 0 to the chain input. For contact information and other cool flash projects visit his site. Basic logic gates and, or, and not gates objectives. Pdf on jun 9, 2018, mohammed qasim taha and others published lab 1. Digital logic it was then possible to make the alu count by fixing one of the inputs at 1 and adding or subtracting it to or from the other input finally an instruction was added that allowed the alu to left shift the bits on input a.

Combinational logic circuits iii purpose and objectives. Logic decoding circuits and multiplexers introduction logic gates are the basic building blocks of digital electronics. A table which lists all possible combinations of input variables and the corresponding outputs is called a truth table it shows how the logic circuit. Experiment 2 basic logic gates implementation using. Elec 2210 experiment 1 basic digital logic circuits. Logic gates objective to get acquainted with the analogdigital training system. Digital electronics logic gates lab report example topics. To introduce some basic concepts and laboratory techniques in working with digital logic gates. Review the logic operation, boolean expression, and the timing diagrams of each of the logic gates. In the past, vacuum tube and relay circuits performed logic functions. Lab 1 part 2 identify the 7400 series ttl gates and look up their data sheets. Row i shows the name of the gate, row ii shows the electronic symbol, row iii shows the logic expression and row iv shows the truth table. Logic and gates are available using digital circuits to produce the desired logical function and is given a symbol whose shape represents the logical operation of. Lab02 basic logic gates chiachun tsai objectives understand a module of digital system and all the components on the module understand basic logic gates, not, and, or, nand, nor, xor, and xnor and their truth tables.

Digital logic circuits analysis and converting boolean expressions to digital circuits. In this tutorial, we will have a brief introduction to logic gates. In the ttl family of digital electronics, voltages in the range. Logic gates, boolean diagrams, chip diagrams, bcd, hex, base 10, octal, gray conversions. Describe how is the led a simple visual indicator of a not gate. Introduction to logic gates not, and, nand, or, nor. Furthermore, in order to see how these different logic gates work, they will be used in separate circuits and have their own truth tables, so that it is easier to tell how they differ from each other, and how they would work.