- The document describes several types of basic logic gates - inverter, AND, OR, NAND, NOR, XOR, and XNOR.
- Each logic gate is defined by its truth table and logical expression showing the output for all combinations of inputs.
- Complex logic gates can be constructed by combining simpler gates, such as using two-input AND gates to create a three-input AND gate.
How to create SystemVerilog verification environment?Sameh El-Ashry
Basic knowledge for the verification engineer to learn the art of creating SystemVerilog verification environment.
Starting from the specifications extraction till coverage closure.
Those slides describe digital design using Verilog HDL,
starting with Design methodologies for any digital circuit then difference between s/w (C/C++) and H/w (Verilog) and the most important constructs that let us start hardware design using Verilog HDL.
How to create SystemVerilog verification environment?Sameh El-Ashry
Basic knowledge for the verification engineer to learn the art of creating SystemVerilog verification environment.
Starting from the specifications extraction till coverage closure.
Those slides describe digital design using Verilog HDL,
starting with Design methodologies for any digital circuit then difference between s/w (C/C++) and H/w (Verilog) and the most important constructs that let us start hardware design using Verilog HDL.
This is the simple ppt explaining about the main components of the power systems. especially we are determining the insulators and its types with real time pictures which are attractive,
Originally made for a class presentation in SPM Form 5 - Electronics
The logic gate examples are animated. Since GIFs are not supported in SlideShare, the slide can be downloaded from here:
https://drive.google.com/file/d/1Jeuz1Y9hBZCNMp6JXnb5gC73uiHD-GGR/view?usp=sharing
AND, OR, NOT, EX-OR, EX-NOR, NAND, NOR Gates with description, truth table, circuiy diagram and universal gate. Conversion of universal gate to basic gates
Here in this slides information about all Logic gates with symbol, circuit and truth tables.
Logic gates are devices that can combine multiple inputs at independent logic levels and come up with an output accordingly. There are many kinds of logic gates, and the distinction lies in that each kind processes the inputs differently, and may give different outputs for the same inputs.
The way the logic gate processes different inputs is given in a truth table for that gate, which lists all the possible combinations of inputs next to their outputs. An example is given for a simple one-input gate with the function of giving the opposite logic level at the output to the one at the input. The inputs are given on the left, and the outputs are on the right. Generally, the inputs are called A, B, C, etc., and the output is labelled Q. In this case, there are only two possible inputs, 1 or 0, but logic gates can have any number of inputs.
Logic Gates & Related Device. This contains some basic fundamentals about Logic Gates. I hope, this will be helpful to those interested in Digital Electronics.
CSEC Physics Review - Introduction To Logic GatesKevin Small
www.knowledgescroll.com
This concise presentation is on the topic of Logic Gates.
This is usually a difficult topic to grasp for those studying CSEC Physics and I hope this presentation helps to clarify any misconceptions.
By viewing this presentation you should be able to:
Understand The Basics of Digital Logic Design
Construct Logical Truth Tables
Understand The Operations of the AND, OR, NOT, NAND, NOR, XOR and XNOR Logic Gates
Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
If the input dc is a voltage source, the inverter is called a Voltage Source Inverter (VSI). One can similarly think of a Current Source Inverter (CSI), where the input to the circuit is a current source. The VSI circuit has direct control over ‘output (ac) voltage’ whereas the CSI directly controls ‘output (ac) current.
Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
If the input dc is a voltage source, the inverter is called a Voltage Source Inverter (VSI). One can similarly think of a Current Source Inverter (CSI), where the input to the circuit is a current source. The VSI circuit has direct control over ‘output (ac) voltage’ whereas the CSI directly controls ‘output (ac) current.
The commutator and brush arrangement is used to convert bidirectional internal current to unidirectional external current or vice versa.
The current flows through the brush mounted on the commutator.
The brushes are located at magnetic neutral axis which is midway between two adjacent poles.
Types of commutation:
Resistance commutation
Retarded commutation
Accelerated commutation
Sinusoidal commutation
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
1. LOGIC GATE
• Actually the term logic is applied to digital circuits used to implement logic functions.
Several kinds of digital logic circuits are the basic elements that form the building
blocks for such complex digital system as the computer.
• The lines connected to each symbols are the inputs and outputs.
• The inputs are on the left of each symbol and the output is on the right.
• A circuit that performs a specific logic operation (AND, OR) is called a logic gate.
2. THE INVERTER
• The inverter (NOT circuit) performs the operation called inversion or
complementation.
• The NOT operation changes one logic level to the opposite logical level. When the
input is Low, the output is high. When the input is high, the output is low.
• The inverter changes one logic level to the opposite level. In terms of bits, it
changes a 1 to a 0 and 0 to 1.
3. TRUTH TABLE OF INVERTER
Input Output
0 1
1 0
When a High level is applied to an inverter input, a Low level will appear on its output.
When a Low level is applied to its input, a High will appear on its output.
LOGICAL EXPRESSION OF INVERTER
X = A’
5. THE AND GATE
• An AND gate can have two or more inputs and performs what is know as
multiplication.
• The output of AND gate is high when all inputs are high otherwise all outputs are
low.
6. OPERATION OF AND GATE
• An AND gate produces a HIGH output only when all of the inputs are HIGH. When
any of the inputs is LOW, the output is LOW. Therefore, the basic purpose of AND
gate is to determine when certain conditions are simultaneously true, as indicated
by High levels on all of its inputs, and produces a High on its output.
Inputs Output
A B X
0 0 0
0 1 0
1 0 0
1 1 1
Logical Symbol Truth Table
11. • To determine the total number of possible combination of binary inputs to a gate is
determined by the following formula.
N=2n
Where N is the number of possible input combinations and n is the number of input
variables.
Example,
Two inputs variables; N=22 = 4 Combinations.
Three inputs variables; N=23 = 8 Combinations.
Four inputs variables; N=24 = 16 Combinations.
12. THE OR GATE
• OR gate can have two or more inputs and performs what is known as logical
addition.
• The output of OR gate is Low when all inputs are low, otherwise all outputs are high
13. OPERATION OF AN OR GATE
• An OR gate produces a High on the output when any of the inputs is High. The
output is Low only when all of the inputs are Low. Therefore, an OR gate
determines when one or more of its inputs are High and produces a High on its
output.
Logical Symbol
Inputs Output
A B X
0 0 0
0 1 1
1 0 1
1 1 1
Truth Table
18. THE NAND GATE
• The NAND gate is the one of the popular logic element because it can be used as a
universal gate; that is NAND gate can be used in combination to perform the AND,
OR, and inverter operations.
• NAND Gate is constructed by attaching NOT Gate at the output of AND Gate,
hence NAND Gate is called NOT- AND Gate.
• NAND Gate has two or more input and only one output.
• The output of NAND gate is low when all inputs are high, otherwise all outputs are
high.
19. OPERATION OF A NAND GATE
• A NAND gate produces a Low output only when all the inputs are High. When any
of the inputs is Low, the output will be High.
Logical Symbol
Inputs Output
A B X
0 0 1
0 1 1
1 0 1
1 1 0
Truth Table
20.
21. LOGICAL EXPRESSION OF NAND
• It’s logical expression is, X= (AB)’
Inputs
A B
0 0 (0.0)’= 0’=1
0 1 (0.1)’= 0’=1
1 0 (1.0)’= 0’=1
1 1 (1.1)’= 1’=0
22. FOR THREE INPUT NAND GATE
INPUT OUTPUT
X Y Z O=(X.Y.Z)’
0 0 0 1
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 0
24. THE NOR GATE
• The NOR gate, like the NAND gate, NOR gate is also useful logical element
because it can also be used as a universal gate.
• NOR gate can be used in combination to perform the AND, OR and Inverter
operations.
• NOR Gate is the combination of NOT gate at the output of OR gate, hence NOR
gate is type of NOT-OR gate.
• NOR gate has two or more input and only one output.
• The Output of NOR gate is high when all inputs are low otherwise the output is low.
25. OPERATION OF NOR GATE
• A NOR gate produces a Low output when any of its inputs is high. Only when all of
it’s inputs are low is the output high.
Logical Symbol
Inputs Output
A B X
0 0 1
0 1 0
1 0 0
1 1 0
Truth Table
26.
27. EXPRESSION OF NOR GATE
• It’s expression is, X=(A+B)’
Inputs
A B
0 0 (0+0)’= 0’=1
0 1 (0+1)’= 0’=0
1 0 (1+0)’= 0’=0
1 1 (1+1)’= 1’=0
28. FOR THREE INPUT NOR GATE
INPUT OUTPUT
X Y Z O=(X+Y+Z)’
0 0 0 1
0 0 1 0
0 1 0 0
0 1 1 0
1 0 0 0
1 0 1 0
1 1 0 0
1 1 1 0
30. THE EXCLUSIVE- OR GATE
• The exclusive-OR gate has a graphical symbol similar to that of the OR gate, except
for the additional curved line on the input side.
• It can take only 2 inputs.
• We can’t construct Ex-OR Gate using three input Ex-OR gate.
• If both inputs are Low or both are High then it produces the output Low or 0.
otherwise it produce the High.
31. TRUTH TABLE
• Logical Symbol
Inputs Output
A B AB’+A’B=X
0 0 0.0’+0’.0 =0+0=0
0 1 0.1’+0’+1=0+1=1
1 0 1.0’+1’.0=1+0=1
1 1 1.1’+1’.1=0+0=0
33. EXCLUSIVE-NOR GATE
• The exclusive-NOR gate is the complement of the exclusive-OR gate, as indicated
by small circle on the output side of the graphic symbol.
• It can take only 2 inputs.
• We can’t construct Ex-NOR Gate using three input Ex-OR gate.
• If both inputs are Low or both are High then it produces the output High or 1.
otherwise it produce the Low output.
34. TRUTH TABLE
• Logical symbol
Inputs Output
A B AB’+A’B=X
0 0 0.0+0’.0’=0+1=0
0 1 0.1+0’+1’=0+0=0
1 0 1.0+1’.0’=0+0=0
1 1 1.1+1’.1’=1+0=1