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For example, an OO program that deals with banking transactions should be recognizable on the basis of the objects that it uses, such as deposit objects,withdrawal objects, account objects, etc.

An anecdotal description

If you have ever assembled a playscape in your back yard, this should sound familiar to you.

When you opened the large boxes containing the playscape, hundreds of objects spilled onto the ground. Those objects may have consisted of braces, chains,swing seats, slides, screws, nuts, bolts, washers, climbing ropes, ladder rungs, and other assorted objects.

Atomic and non-atomic objects

I will refer to (most of) the kinds of object that I have described in the above list as atomic objects. What I mean by that is that they can't be easilysubdivided into smaller objects without destroying their functionality.

If you were lucky, some of the objects in the box may not have been atomic objects. Instead they may have been pre-assembled arrangements of atomic objectssuch as an assembly of seats and braces representing a object on which two children can swing together.

Your job - assemble the objects

Your job was to assemble those hundreds of atomic and non-atomic objects into a final object which you proudly referred to as "The Playscape."

Objects working together

It has been said that a successful object-oriented program consists of a bunch of cooperating software objects working together to achieve a specifiedbehavior.

The overall behavior of the program is the combination of behaviors of the individual objects. For example, some objects may acquire input data, otherobjects may compute and produce output data, while other objects may display the output data.

It could also be said that a playscape consists of a bunch of hardware objects working together to achieve a specified behavior. The overall behaviorof the playscape is the combination of behaviors of the individual objects. For example, the behavior of some of the braces is to stand strong and not bend,while the behavior of a swing chain is to be flexible and move in a prescribed way.

Creating a model

One of the tasks often faced by an object-oriented programmer is to assemble software objects into a model that represents something that exists in the real world. As a very visual example, you might be asked to create an advertising webpage showing an animated software model of the playscape that you assembled in your back yard. With the playscape, you were simply required to assemble theexisting objects. However, in the object-oriented programming world, you must do more than just assemble objects.

Objects must be designed and manufactured

Getting back to the playscape, each of the objects for the playscape was manufactured before being shipped to you. Even before that, each object wasdesigned by someone and a set of manufacturing drawings was probably created so that the object could be mass produced.

A class is analogous to manufacturing drawings

In OOP, there is a direct analogy to the manufacturing drawings of the hardware world. We call it a class . A class documents the specifications for the construction of a particular type of software object. Forexample, there is probably a set of classes that describe the specifications for each of the button objects and menu objects at the top of the browser in whichyou are currently viewing this module.

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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