WEEK 4-5 WORKING IN MICROSOFT WINDOWS ENVIRONMENT

The Desktop
The Desktop is the main Windows 7 screen (see image below). It is the work area where dialog boxes, windows, icons,
and menus appear. Like an office desk, the Windows 7 desktop contains items you can use to do your job. For
instance, from your desktop, you can perform file-management tasks and run software applications. You can
customize the appearance of the desktop to suit your preferences

Start Menu Basics
The Start Menu is, appropriately enough, your starting point in Windows 7. All of your programs, settings, etc. can be
accessed here. To begin using it, click the Windows Icon button in the bottom left corner or press the Windows key on
your keyboard. Here are some common items you’ll use on the Start Menu.

LEARN MORE ABOUT WINDOWS ENVIRONMENT

VIRTUALIZATION OF OPERATING SYSTEMS

What is Virtualization?

OS virtualization

Create a platform that emulates a hardware platform and allow multiple instances of an OS to use that platform, as though they have full and exclusive access to the underlying hardware
 
Virtualization – Why?
Server Consolidation 
–Often many servers support 1 major application 
–Strong isolation between VMs 
–Virtualization saves on hardware & energy 
•Disaster Recover
 •High Availability 
•Testing and Deployment

  MORE ABOUT VIRTUALIZATION

DOS

DISK OPERATING SYSTEM

This software connects the hardware with the programs you want to run.

   MS-DOS:

 Microsoft DOS (Disk Operating System) is a command line user interface. MS-DOS 1.0 was released in 1981 for IBM computers. 

In its day, it was easily the most popular operating system in the world. 

INTERNAL FILE COMMANDS

Dir 

.Rename (Ren) 

.Delete  (Del)

Copy

Type 

.Set Attributes (attrib)  

MORE ABOUT DOS           

 

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