This blogging website will be all about learning
Programming and mastering in it. You never stop learning, so I'm a
learner too.
But before jumping into intangible part of the computer system, lets get to know something about the tangible part.
So, what is a Computer?
Simply speaking, A computer is an electronic device that
manipulates information, or data. It has the ability to store, retrieve, and process data. You probably already know that
you can use a computer to type documents, send email, play games, and browse the Web. You can also use it
to edit or create spreadsheets, presentations, and even videos. But it’s
ever more than you can ever explore.
(*EK4U: The word
"computer" was first recorded as being used in 1613 and was
originally was used to describe a human who performed calculations or
computations. The definition of a computer remained the same until the end of
the 19th century when people began to realize machines never get tired and can
perform calculations much faster and more accurately than any team of human
computers ever could.)
Data is the raw material that’s provided to the computer by
the user.
Information is the useful material that computer gives back
after processing the raw material with the help of software/ programs.
First General Purpose computer was ENIAC(Electronic Numerical Integrator And
Computer) invented in 1946
by John Presper Eckert & John W. Mauchly.
Hardware used : Vaccum Tubes, CRT Screen.
Software: Stored Program/Machine code.
**GK: - Charles Babbage is called the father of computer
and the first programmer was Lady Ada Lovelace.
Stored
Program: Program
that is stored in the memory of the computer that executes it.
For e.g.
If we give some instruction to any educated person, the person is
capable of keeping the information or instruction in the memory and act
according whenever required. The capability of storing the instructions is
called the stored program.
It
uses
I-P-O
system
(Input Processing Output System)
System
software:
System software manages the computer resources, basically it provides
the interface between the hardware and the user but does not directly interacts
with the users. In other word, System software (systems
software) is computer software designed to operate and
control the computer hardware and to provide a platform for running
application software. System software can be separated into two
different categories, operating systems and utility software.
Application Software: Application
software is a set of one or more programs designed to carry out operations
for a specific application. Application software cannot run on
itself but is dependent on system software to execute.
Application software interacts directly with the
user.
*EK4U: Extra Knowledge for You
**GK: Get to Know
***H/W: Hardware
***H/W: Hardware
