COMPUTER SCIENCE

Computer Science: Google Android and Open Source Mobile Operating Systems.



Computer Science: Google Android and Open Source Mobile Operating Systems.

What is 'Open Source'?

The designation 'open source' applies to the software whose license meets criteria established by the Open Source Initiative. In other words, there is a possibility of free redistribution, access to the source code and derivative works. Mostly, free software is described as "open source" because the licenses are compatible to open source licenses which are included free as defined by the FSF. The term 'open source' is in competition with the term "free software" recommended by the FSF (Temporal & Lee, 2000, pp.24-26). The formal difference between Open Source and Free Software has virtually no impact in the evaluation licenses. It has been time-cons include a famous example with the proposed Darwin to Apple, which was according to the OSI Open Source but not Free Software under the Free Software Foundation. Since version 2.0 of the APSL, the license under which it is distributed, is not the case. The designations Free Software and Open Source are two competing names for the same software license. Using the name Free Software, we would like to emphasize the philosophical and political purpose of the license, while the Open Source designation focuses on method development and dissemination of the software. The history and the controversies are raised in the article Open Source Initiative.

History of Mobile Operating Systems

The life of modern man is practically impossible without mobile devices. Their quality is more dependent on hardware features, but usability is more dependent on the mobile operating system. It is therefore, very important to select not only the good characteristics of the hardware but we must also choose an operating system, which is convenient for us to work. And just summing these options, we will be able to choose the best mobile device. This article addresses the most common operating system for mobile devices:

Symbian OS Symbian OS

Windows Mobile Windows Mobile

Linux-based system (Android)

Palm OS Palm OS

iPhone OS iPhone OS

BlackBerry OS BlackBerry OS

Below some of the system will be described in more detail.

Symbian OS

The most popular operating system for mobile devices thanks to the support of the company Nokia. A prominent role is also played by the fact that the system is small, and the fact that the GUI and the core of the system are separated from each other. This allows easy porting to the mobile devices. Each developer is creating a distribution of the operating system depending on hardware limitations, under which it is designed. This version of Series 60, Series 80, Series 90, UIQ and MOAP has its unique characteristics, making it necessary for a different version to develop their own applications. It is uncomfortable, so after the appearance of Windows Mobile, Android and iPhone OS has lost its popularity among manufacturers of mobile devices (Prahalad & Krishnan, 2008, pp.59-62).

Advantages

Low memory requirements and CPU

Release unused memory function

Stability

A small number of viruses for this platform

Disadvantages:

For communication with the PC to install additional software

Incompatibility ...