Object-oriented programming originated from efforts to build interactive flight simulators in the 1940s-1950s. The Whirlwind computer project at MIT, completed in 1950, was the first fully interactive digital computer and enabled new types of programs like Sketchpad, the first interactive graphical program. Sketchpad used an object-oriented approach and influenced later work on graphical user interfaces and object-oriented languages. In the 1960s, the Simula language introduced features for implementing simulations using objects, influencing Alan Kay who went on to develop Smalltalk, the first successful object-oriented programming language. Nearly all modern programming languages now support object-oriented programming.
First day of slides for @GAFFTA workshop http://www.gaffta.org/2012/07/24/hacking-the-kinect-with-openframeworks/
Part 1 of the live stream : http://www.youtube.com/watch?v=WXfy8Cuje-0&feature=plcp
Part 2 of the live stream :
http://www.youtube.com/watch?v=I80FsOlMPj8&feature=plcp
First day of slides for @GAFFTA workshop http://www.gaffta.org/2012/07/24/hacking-the-kinect-with-openframeworks/
Part 1 of the live stream : http://www.youtube.com/watch?v=WXfy8Cuje-0&feature=plcp
Part 2 of the live stream :
http://www.youtube.com/watch?v=I80FsOlMPj8&feature=plcp
A brief historical survey of how programming languages have evolved over the decades. We revisit several milestones along the way, reminding ourselves of a few of the missed opportunities. We examine the broad families into which programming languages fall -- an informal phylogenetic tree. We try to recognize the convergence of features among several mainstream languages. Finally, we discuss the current state of affairs in the world of programming languages.
A brief historical survey of how programming languages have evolved over the decades. We revisit several milestones along the way, reminding ourselves of a few of the missed opportunities. We examine the broad families into which programming languages fall -- an informal phylogenetic tree. We try to recognize the convergence of features among several mainstream languages. Finally, we discuss the current state of affairs in the world of programming languages.
Developers who contributed hugely to and had a lasting influence on the software development profession, and who also have an extraordinary personal history.
This is the notes for the Module CT1101 - Computer Technology, a first year module taught in Bachelors of Media Technology (Shepherd College, Purbanchal University)
Chapter 15 Networks Read in this book Computer Science Illuminated, .pdfmohdjakirfb
Chapter 15 Networks Read in this book Computer Science Illuminated, Sixth Edition by Dale
and Lewis p.501-510 & 525, then answer the following:
1. What is a protocol in the context of computer networks?
2. Which LAN topology requires the most wiring: the ring, star, or bus? Explain your reasoning.
3. How do you think our lives would be different if Doug Engelbart’s contribution to computing
never happened?
Solution
1)PROTOCOL:
When computers communicate with each other, there needs to be a common set of rules and
instructions that each computer follows. A specific set of communication rules is called a
protocol. Because of the many ways computers can communicate with each other, there are
many different protocols -- too many for the average person to remember. Some examples of
these different protocols include PPP, TCP/IP, SLIP, HTTP, and FTP.
Protocol, in computer science, a set of rules or procedures for transmitting data between
electronic devices, such as computers. In order for computers to exchange information, there
must be a preexisting agreement as to how the information will be structured and how each side
will send and receive it. Without a protocol, a transmitting computer, for example, could be
sending its data in 8-bit packets while the receiving computer might expect the data in 16-bit
packets. Protocols are established by international or industry wide organizations. Perhaps the
most important computer protocol is OSI (Open Systems Interconnection), a set of guidelines for
implementing networking communications between computers. Among the most important sets
of Internetprotocols are TCP/IP, HTTPS, SMTP, and DNS.
2) Star topology requires the most wiring:
In the star topology, cable segments from each computer are connected to a centralized
component called a hub. Signals are transmitted from the sending computer through the hub to
all computers on the network. This topology originated in the early days of computing when
computers were connected to a centralized mainframe computer.
3) Douglas Carl Engelbart (January 30, 1925 – July 2, 2013) was an American engineer and
inventor, and an early computer and Internet pioneer. He is best known for his work on founding
the field of human–computer interaction, particularly while at his Augmentation Research Center
Lab in SRI International, which resulted in the invention of the computer mouse, and the
development of hypertext, networked computers, and precursors to graphical user interfaces.
These were demonstrated at The Mother of All Demos in 1968. Engelbart\'s Law, the
observation that the intrinsic rate of human performance is exponential, is named after him.
Engelbart created the first primitive windowing concept with NLS, but the main way I think his
idea was influential was in using a combination of input devices (keyboard with mouse) with a
graphical user interface whose primary role was allowing people to enter, structure, manipulate,
format, and share text combined with gra.
Learning C++.. Theoretically, and examples .. it's very useful and simple to learn.
In this you learn what is c++, it's syntax,main points and basics..
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
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.
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!
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
1.4 modern child centered education - mahatma gandhi-2.pptx
object oriented-programming
1. 10.3 Object-Oriented Programming
Object-oriented programming is a style of programming where programs are
broken down into objects that can be combined to solve a problem or model a simulated
world.
The notion of designing programs around object manipulations goes back at least
to Ada (see the quote at the end if Chapter 6), but started in earnest in the early 1960s.
During World War II, the US Navy began to consider the possibility of building
a airplane simulator for training pilots and aiding aircraft designers.
At the time, pilots trained in mechanical simulators that were custom designed
for particular airplanes. The Navy wanted a simulator that could be used for
multiple airplanes and could accurately model the aerodynamics of different airplanes.
Project Whirlwind was started at MIT to build the simulator. The initial plans called for
an analog computer which would need to be manually reconfigured to change the
aerodynamics model to a different airplane.
Jay Forrester learned about emerging projects to build digital computers,
including ENIAC which became operational in 1946, and realized that building a
programmable digital computer would enable a much more flexible and powerful
simulator, as well as a machine that could be used for many other purposes.
2. Before Whirlwind, all digital computers operated as batch processors where
a programmer creates a program (typically described using a stack of punch cards) and
submits it to the computer.
A computer operator would set up the computer to run the program, after which
it would run and (hopefully) produce a result.
A flight simulator, though, requires direct interaction between a human user and
the computer.
The first Whirlwind computer was designed in 1947 and operational by 1950. It was the
first interactive programmable digital computer.
Producing a machine that could perform the complex computations needed for a flight
simulator fast enough to be used interactively required much faster and more reliable
memory that was possible with available technologies based on storing
electrostatic charges in vacuum tubes.
Jay Forrester invented a much faster memory based known as magnetic-core memory.
Magnetic-core memory stores a bit using magnetic polarity.
The interactiveness of the Whirlwind computer opened up many new possibilities for
computing.
Shortly after the first Whirlwind computer, Ken Olson led an effort to build a version of
the computer using transistors.
3. themselves.
The successor to this machine became the TX-2, and Ken Olsen went on to found Digital
Equipment Corporation (DEC) which pioneered the widespread use of moderately
priced computers in science and industry.
DEC was very successful in the 1970s and 1980s, but suffered a long decline
before eventually being bought by Compaq.
Ivan Sutherland, then a graduate student at MIT, had an opportunity to use the TX-2
machine. He developed a program called Sketchpad that was the first program to have
an interactive graphical interface.
Sketchpad allowed users to draw and manipulate objects on the screen using a light pen.
It was designed around objects and operations on those objects:1
In the process of making the Sketchpad system operate, a few very general functions
were developed which make no reference at all to the specific types of entities on which
they operate.
These general functions give the Sketchpad system the ability to operate on a
wide range of problems.
The motivation for making the functions as general as possible came from the desire to
get as much result as possible from the programming effort involved…… Each of the
general functions implemented in the Sketchpad system abstracts, in some sense, some
common property of pictures independent of the specific subject matter of the pictures
4. task. The documentation was incomprehensible.
Sketchpad was a great influence on Douglas Engelbart who developed a research
program around a vision of using computers interactively to enhance human intellect.
In what has become known as "the mother of all demos", Engelbart and his colleagues
demonstrated a networked, graphical, interactive computing system to the general
public for the first time in 1968.
With Bill English, Engelbard also invented the computer mouse.
Sketchpad also influenced Alan Kay in developing object-oriented programming.
The first language to include support for objects was the Simula programming
language, developed in Norway in the 1960s by Kristen Nygaard and Ole Johan Dahl.
Simula was designed as a language for implementing simulations. It
provided mechanisms for packaging data and procedures, and for implementing
subclasses using inheritance.
In 1966, Alan Kay entered graduate school at the University of Utah, where Ivan
Sutherland was then a professor. Here's how he describes his first assignment:
Head whirling, I found my desk. On it was a pile of tapes and listings, and a
note: "This is the Algol for the 1108.
It doesn't work. Please make it work.'' The latest graduate student gets the latest dirty
5. object-oriented language.
Supposedly, this was the Case-Western Reserve 1107 Algol---but it had been doctored
to make a language called Simula; the documentation read like Norwegian
transliterated into English, which in fact it was.
There were uses of words like activity and process that didn't seem to coincide with
normal English usage.
Finally, another graduate student and I unrolled the program listing 80 feet down the
hall and crawled over it yelling discoveries to each other.
The weirdest part was the storage allocator, which did not obey a stack discipline as
was usual for Algol. A few days later, that provided the clue.
What Simula was allocating were structures very much like the instances
of
Sketchpad. There were descriptions that acted like masters and they could create
instances, each of which was an independent entity. ……
This was the big hit, and I've not been the same since…… For the first time I thought of
the whole as the entire computer and wondered why anyone would want to divide it
up into weaker things called data structures and procedures.
Why not divide it up into little computers, as time sharing was starting to? But not in
dozens. Why not thousands of them, each simulating a useful structure?
Alan Kay went on to design the language Smalltalk, which became the first widely used
6. Smalltalk was developed as part of a project at XEROX's Palo Alto Research Center to
develop a hand-held computer that could be used as a learning environment by
children.
In Smalltalk, everything is an object, and all computation is done by sending messages
to objects. For example, in Smalltalk one computes (+ 1 2) by sending the message + 2 to
the object 1. Here is Smalltalk code for implementing a counter object:
class name counter
variable names count
new count <- 0
next
count <- count + 1
instance
current ^ count
The new method is a constructor analogous to make-counter. The count instance
variable stores the current value of the counter, and the next method updates the
counter value by sending the message + 1 to the count object.
Nearly all widely-used languages today provide built-in support for some form of object-
oriented programming. For example, here is how a counter object could be defined in
Python:
class counter:
def
def
init (self):
self._count = 0 rest(self):
self._count = 0
def next(self): self._count =
self._count + 1
def current(self): return self._count
The constructor is named init . Similarly to the object system we developed
for Scheme, each method takes the self object as its parameter.
7. Smalltalk was developed as part of a project at XEROX's Palo Alto Research Center to
develop a hand-held computer that could be used as a learning environment by
children.
In Smalltalk, everything is an object, and all computation is done by sending messages
to objects. For example, in Smalltalk one computes (+ 1 2) by sending the message + 2 to
the object 1. Here is Smalltalk code for implementing a counter object:
class name counter
variable names count
new count <- 0
next
count <- count + 1
instance
current ^ count
The new method is a constructor analogous to make-counter. The count instance
variable stores the current value of the counter, and the next method updates the
counter value by sending the message + 1 to the count object.
Nearly all widely-used languages today provide built-in support for some form of object-
oriented programming. For example, here is how a counter object could be defined in
Python:
class counter:
def
def
init (self):
self._count = 0 rest(self):
self._count = 0
def next(self): self._count =
self._count + 1
def current(self): return self._count
The constructor is named init . Similarly to the object system we developed
for Scheme, each method takes the self object as its parameter.