ITC - Chapter # 3
ITC - Chapter # 3
ITC - Chapter # 3
SYSTEM
CHAPTER #
3
Introduction to Computing
Computer System
System
A group or combination of interrelated, interdependent, or
interacting elements forming a collective entity.
Computer System
A functionally related group of elements, especially a
network of related computer hardware, software and data
transmission.
So a system of one or more computers and associated
software with common storage
Users
are the people operating the computer
are the most important part
tell the computer what to do
In fact the user is a critical part of a complete computer system,
especially when a personal computer is involved
this may seem surprising, since we tend to think of computer as intelligent
devices, capable of performing amazing tasks
People also sometimes believe that computer can think and make
decisions, just like human do
but this is not the case
even the most powerful supercomputer requires human interaction for
solving problems.
When working with a personal computer, the user can take on several
roles, depending on what he or she wants to accomplish
Chapter # 3 Introduction to Computing 10
Components of Computer Systems (Data)
Data
Pieces of information
Computer organize and present data
Data is collection of facts as values or measurements.
It can be numbers, words, observations or even just description of things
This information may be in the form of
Text documents
Images
Audio clips
Software programs, or other types of data
Communications devices perform both input and output functions,
allowing computers to share information
In a computer, data consists of small pieces of information that, by
themselves, may not make sense to a person
The computer manipulates data into useful information
Chapter # 3 Introduction to Computing 11
Components of Computer Systems (Hardware)
It helps manage the computer hardware and provides common services for
efficient execution of various application software
(operating system)
3) An executable
program is
created
1) A programmer writes
a computer program
2) The compiler translates
the program into a form
that the computer can
understand