Know Your Computer Operating System

The operating system is a software whose function is to provide services to the user, whereby the operating system also serves as an interface between hardware and software. As we all know that, the computer consists of three basic parts, namely hardware, software and user.
The operating system acted as an intermediary between programs and hardware, imagine if in case there is no operating system, all programs are designed to be able to recognize all kinds of different hardware. This is where the operating system role, operating system provides services to programs about the details of hardware such as mice, keyboards, monitors, etc..

Brand operating system on the market very much at all, which distinguishes only be made by different companies and also they have different ways in terms of arrangement in the form of a memory access interface, how to use, etc. But it basically had the same role and functions. When you first run the computer, there is an initial program that must run, the program is called bootstrapping. This program manages all aspects of hardware, after the program is finished running, the next operating system will find stored in your hard disk, floppy, cd, etc.. Depending on which operating system is stored. After the operating system is found, then all the controls over hardware, be taken over by the operating system.

1. DOS (Disk Operating System) as its operating system
DOS is one of the operating system made by Microsoft, DOS itself provide services to users via a text based shell. Interface that is provided in the form of the command line, so users need to type the command with the keyboard to get a service
particular.

2 Linux as its operating system
Linux operating system is one that has the characteristics similar to UNIX operating system, Linux itself was created by Linux Torfald. Linux is open source which means all the source code can be changed and it has freely disseminated. Linux services provided is similar to DOS, but Linux can also provide services such as GUI (Graphical User Interface) based shell.

3. FreeBSD
FreeBSD is the only derivative of the UNIX operating system that is free. The operating system was mostly used as a server with a variety of purposes, because the famous toughness. To use this operating system, not too much different with the linux operating system.

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