OPERATING SYSTEM By: Jezaniah Perez 13 comments

   OPERATING SYSTEM

  A software that manages computer hardware and software resources that provides common service for computer programs. It also acts an intermediary between programs and the computer hardware.

Examples of Modern Operating Systems

Windows Operating System

Is a metafamily of graphical operating systems developed, marketed, and sold by Microsoft. It consists of several families of operating systems, each of which cater to a certain sector of the computing industry.

ENVIRONMENT OF WINDOWS 95

UBUNTU Operating System

Is a free and open sourced Linux operating system.  Ubuntu means “human-ness” or “humanity towards others” in Southern African philosophy.

Open source software is software that can be freely used, changed, and shared (in modified or unmodified form) by anyone.

UBUNTU ENVIRONMENT

UBUNTU DASHBOARD

LIBRE OFFICE

UBUNTU SOFTWARE CENTER

VIRTUAL BOX

The picture below is the representation of the windows once you run the virtual box.

Click this link for your handouts -> (https://drive.google.com/open?id=0B6NCAA3FHRGVZUdFSFluVEJjZWc)

MS-DOS By: Jezaniah Perez 6 comments

Microsoft Disk Operating System (MS – DOS)

TIM PATERSON

Tim Paterson (born 1956) is an American Computer Programmer, best known for creating 86-DOS, an operating system for the INTEL 8086 that emulated the API of CP/M and which formed the basis of MS-DOS, the most widely used personal computer operating system in the 1980s. 

MS-DOS -> is an operating system with a command-line interface used on personal computers. It translates keyboard input by the user into operations the computer can perform, it also oversees operations such as disk input and output.

MS-DOS ENVIRONMENT

DOS COMMANDS

Internal Commands –> a command that resides memory whenever DOS is active. 

CD or CHDIR - This command lets    you change directories.

   Ex. C:\>CD windows

   The result will be

   C:\WINDOWS>

CD.. – moves one directory back. 

CD\ - moves back to the root drive of the directory.

VER – displays the MS-DOS version number.   

   Ex. C:\ver

TIME – displays and sets the system time. 

   Ex. C:\time

DATE -  This command lets you set your systems date. 

    Ex. C:\>date

DEL or ERASE – removes a file you want deleted.

    Ex. C:\>del file.exe

MD – creates a directory

     Ex. C:\ mda

RD – remove or delete directory

     Ex. C:\ rd directoryname

DIR - This command gives a listing of most of the files and directories on a disk.

    Ex. C:\ dir

/W - gives the directory listing wide across your screen without times, dates, and sizes listed

     Ex. C:\ dir/w

CLS – This command clears the screen

     Ex. C:\cls

COPY - This command obviously copies files to different spots on your disks. It does not remove the source file after writing the new file.

     Ex. C:\copy mystuff.doc A:

EXIT – closes the command prompt

     Ex> C:\exit

External Commands  – >a command that resides on disk.

 ATTRIB – Function to set or remove file attributes: (Read-Only, System, Hidden). These attributes are used by a wide variety of programs to protect and classify files.

S – System Files

H – Hidden Files

R – Read-Only files

[+] - adds the attribute

[-] – removes attribute

[/S] – also applies to files on sub directories of current directory

[/D] – applies on folders

Ex. ATTRIB –s –h –r /s /d g:\*.*

Click this link for your handouts -> (https://drive.google.com/open?id=0B6NCAA3FHRGVZUdFSFluVEJjZWc)