application programs and operating system

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sunshine said:
what is the relationship between application programs and the
operating system?

The operating system is like the engine in your car; the
applications are like the transmission, brakes, air bags, etc..

Pop
 
The operating system provides the foundation for applications to run and
manages the hardware. When you launch a program the OS allocates memory and
loads executable code and data there from the hard drive. It keeps track of
the instructions being executed and passes them to the CPU. A multitasking
OS also manages the interaction of programs giving each their share of
processor time and system resources. Programs use services provided by the
OS to read and write files, print, communicate, etc. The interface that
programs use to call upon these services is called an API (Applications
Program Interface).

It's an interesting question and could be given a much longer answer, but
that should give some basic idea.
 
Salut/Hi sunshine,

le/on Mon, 31 Jan 2005 05:39:03 -0800, tu disais/you said:-
what is the relationship between application programs and the operating system?

The operating system is like the sewage system in your house. It keeps
everything running!

Applications are what run in your sewage system.

Remember that when next you read about an upgrade to some super duper new
operating system. It's no more glamorous than your drains! All you ask is
that they should work perfectly and never cause a smell.
 
The operating system is like the sewage system in your house. It keeps
everything running!

Applications are what run in your sewage system.

I get tired of the car analogies and thought I was looking forward to
reading something different. Wasn't expecting a sewage parallel. Accurate
but the imagery stinks. ;^)

One of my favorites is the house analogy. Simple version:
Hardware = foundation
Operating system = house structure built on the foundation
Applications = individual rooms dedicated to specific purposes
 
Sharon

Most men can understand a car analogy better than anything connected to
house building regulations.. :)

--
Mike Hall
MVP - Windows Shell/user
 
I like the sports analogy where the OS is the field and applications are the
players.
 
Salut/Hi Sharon F,

le/on Tue, 1 Feb 2005 08:44:18 -0600, tu disais/you said:-
I get tired of the car analogies and thought I was looking forward to
reading something different. Wasn't expecting a sewage parallel. Accurate
but the imagery stinks. ;^)

Well, I have to say that what I like about it is that it is somewhat of an
antidote to the pressure to get the lastest and greatest new operating
system. I have to admit that I have the greatest reluctance to EVER getting
Mk 1 of any software, and especially an O.S. So when XP got to SP2 I reckon
they'd probably have got the worst bugs ironed out and it was becoming
increasingly hard to get Win 98 optimised software.
One of my favorites is the house analogy.


Not bad at all either. Equally demystifying.
 
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