The Macintosh Os Operating System Computer Science
This operating system also called Macintosh OS, is developed, marketed and sold by the Apple Incorporation and since 2002 it has been included in the all Macintosh computer systems.
Some of the features of this operating sytem are discussed below:Workspaces:
It saves the configuration including location, window settings, and shell configurations of all the opened windows as a workspace.
These configurations can then be recalled instantly.MAC Synchronization for System Preferences:
With .Mac account the System Preferences can be used across all Mac platforms, no matter what MAC we use.Guest Log-In Accounts:
With this feature anyone usually called 'guest', can be allowed to surf the web and check email as a guest on Mac.
When the guest log out, the Mac OS does not save any of their activities and infact removes any trace of his activity.
So each time someone logs in as a guest, he or she gets a fresh, unused account.Accessibility:
Apple has been gradually bringing its Mac OS up to speed in terms of accessibility features for users with physical disabilities.The newer ones like Mac OS X supports Voiceover, support for trackpad gestures for the vision impaired, and support for Braille displays.Grammar Check:
There is a built-in English language grammar checker helps ensure that we don't make any error in grammar.Scroll Non-Active Windows:
In this OS we can easily Scroll any opened window, even if it's not active by simply positioning the mouse over the target window and then scrolling.Font Auto-Activation:
This automatically activates fonts as needed.
Whenever an application requests an installed font that is currently disabled, then that font is activated and kept active until the requesting application exits.Instant Screen Sharing from the Finder:
With this feature one can start an interactive screen sharing session with other Macs on his network.
Just select the Mac from sidebar and if authorized, one can see and control the Mac as if he were right in front of it.Aqua GUI:
The new version of Mac OS X has the Aqua GUI.
It is the graphical user interface with water like effects.
Every window element, text, graphic or widget is opened it appears with a ripple effect.USAGE:
It is used in Apple's iphones and its other devices.SYMBIAN OS
Symbian is an operating system (OS) designed for mobile devices and smartphones, with associated libraries, user interface, frameworks and reference implementations of common tools.
It is developed by Symbian Ltd.
It is the advanced, open operating system that allows customization.
It was planned from the beginning to be a full operating system in terms of functionality.
Its features are discussed below:
Open application environment:
Symbian OS enables mobile phones to be a platform for deployment of applications and services (programs) developed in a wide range of languages like Java and C++.
Symbian OS includes a multi-tasking kernel that acts as middleware for communications, data management and graphics, the lower levels of the graphical user interface framework, and application engines.
Symbian OS provides instant access to user data.
It ensures the integrity of data, even in the presence of unreliable communication by providing limited resources such as memory, storage and power.
Flexible user interface design:
A flexible graphical user interface design is included in Symbian OS due to which it is fostering innovation and is becoming choice for manufacturers, enterprises and end-users.
Using the same core operating system in different designs also eases application porting for third party developers.
Symbian OS includes comprehensive support for SMS, EMS, MMS, email and fax.
Peer-to-peer multimedia messaging is a key revenue generator for 2.5G and 3G networks.USAGE:
It has a large share in the market and it is mostly used in smartphones.
It is used by many major handset manufacturers including:
- Sony EricssonLINUX
Linux is a powerful, non-proprietary, open source operating system.
Although Linux was originally designed to operate only on Intel-based PCs, portable and modular coding has allowed it to become increasingly hardware independent and today it operates on an impressive and growing list of hardware platforms.
It has many good features that are listed follow:
Open Source and Free:
It is open source so all code can be seen, and edited, and recomplied, which allows main developers fix bugs etc.
All source code is available, including the whole kernel and all drivers, the development tools and all user programs, also all of it is freely distributable.
Linux can be modified or customized.
There are numerous window managers and desktop environments for it, and each one of them is infinitely themeable.
Everything can be changed about the way the OS interacts.
Little or No Viruses:
Only 2 viruses ever got out for the linux, and they were years ago, and exploited very old holes in very old kernels.
Linux is completely immune to all known spy-ware and malware.
The linux is a completely secure operating system.
Linux base model invokes a true unix-like multi-user environment.One is always signed in as a user, unless user chooses to sign in as root, and a user cannot install software without first going through the process of giving themselves access to the root account, which will typically involve knowing the root password.
Anything that installs in the user account cannot affect the wider system, and can be eliminated by simply erasing the user's home directory.
This is why viruses are, at best, ineffective.
Multitasking: It supports multitasking i.e several programs running at the same time.
Multiuser: Several users can log-in on the same machine at the same time.