COMPILER,INTERPRETER,LINKER & LOADER

COMPILER
It is a program that reads a program in one language – the source language and translates into an equivalent program in another language – the target language

 INTERPRETER

It is a computer program that translates and executes instructions written in a computer programming language line-by-line, unit by unit etc.,

 LINKER

A linker or link editor is a program that takes one or more objects generated by compilers and assembles them into a single executable program. 

 LOADER

It is the part of an operating system that is responsible for loading programs into memory, preparing them for execution and then executing them. 

MORE ABOUT THE NOTES 

WEEK 2-3 COMPUTER SYSTEM SOFTWARE

OPERATING SYSTEM CONCEPT

•Operating System is a software, which makes a computer to actually work.

•It is the software the enables all the programs we use 

•Examples: Windows, Linux, Unix and Mac OS, etc.

 

UTILITY SOFTWARE

•Anti-virus utilities scan for computer viruses. 

•Archivers output a stream or a single file when 

provided with a directory or a set of files.

Archive suites may include compression and

encryption capabilities. 

Some archive utilities have a separate un-archive 

utility for the reverse operation.

 

TYPES OF OPERATING SYSTEM 

•Open source: Ubuntu,linux

•Closed source: Windows,Mac Os

Utility Programs

GET NOTES  

 

COMPUTER IMPACTS & APPLICATIONS

Computers: not just for dorks sitting alone in front of glowing display monitors

Technology & computers have an impact on society and people’s social behavior, sometimes in unexpected ways

Need to figure out why
and deal with it
Personal:  Information systems that serve the needs of an individual user
Workgroup: Two or more people who work together to achieve a common goal
Enterprise: Information systems that support the firm in its interaction with its environment.

MORE ABOUT COMPUTER IMPACTS & APPLICATIONS

HARDWARE PARTS & SOFTWARE PATRS OF COMPUTER

HARDWARE PARTS
Computer can be divided into two parts:
–Hardware
•System Unit
•Input devices
•Output devices

The system unit is the core of a computer system.
Usually it's a rectangular box placed on or underneath your desk.

 MORE ABOUT HARDWARE PARTS

SOFTWARE PARTS

SOFTWARE

•System Softwares
•Application Softwares

System software is computer software designed to operate the computer hardware and to provide and maintain a platform for running application software

Application software is computer software designed to
help the user to perform singular or multiple related
specific tasks.

MORE  ABOUT SOFTWARE PARTS

TYPES OF COMPUTERS

   
    

n          A microcomputer that fits on a

                   desk and runs on power from 

                       an electrical wall outlet.

 

           A portable, compact computer

                 that can run on an electrical wall

                  outlet or a battery unit.

      

          

   

   

          Large expensive

              computer capable of

           simultaneously processing 

              data for hundreds or 

             thousands of users.









GENERAL TYPES
SUPER COMPUTER
MICROCOMPUTER
MINI COMPUTER
MAINFRAME COMPUTER

      
                               
      GET NOTES

HISTORY OF COMPUTER

 The first computers were people! That is, electronic computers (and the earlier mechanical computers) were given this name because they performed the work that had previously been assigned to people. "Computer" was originally a job title: 

  

l

        The U.S. military desired a mechanical calculator more optimized for scientific computation.

       By World War II the U.S. had battleships that could lob shells weighing as much as a small car over distances up to 25 miles. 

                           GET NOTES

WEEK 1 - 2 COMPUTER BASICS

COMPUTER OVERVIEW

Computer is an advanced electronic device that takes raw data as input from the user and processes it under the control of set of instructions (called program), gives the result (output), and saves it for the future use.
This Computer Fundamentals tutorial covers a foundation understanding of computer hardware, software, operating systems, peripherals etc. along with how to get the most value and impact from computer technology.

Today’s world is an information-rich world and it has become a necessity for everyone to know about computers. Purpose of this tutorial is to introduce you about computer and its fundamentals.

GET NOTES