lecture 4 who owns your digital tools and does it matter?

What is operating system?
Operating system is an matter between hardware and user which has a function of management and coordination of activities and the sharing of the resources of the computers.besides, operating system is responsible for handling the details of the operation of the hardware and arranging a priority for networks and applications.


What is software? It is a general term to describe the computer programs in computer system.
What is free software? It can be duplicate copies from other’s computer without committing copyright law. It is easy to edit, such as changing the code. Users do not have to ask or pay for permission. Last but not least, proprietary software ofter spy on user’s activities on computer and restrict them from sharing things with others.

What is the difference between proprietary operating systems like Windows and open source operating systems such as Linux or Ubuntu?

Propietary operating systems requires users to pay for the permission. It also limit the ability of software applications to run on other systems and also limit the market for any application software. All in all, it has a lot of restrictions. an open source, such as Linux in which users can download it from the internet for free of charge. Last but not least, several proprietary operating system often spy on user’s activities on computers. The system can restrict the users from downloading illegal stuff and duplicate stuffs. In contrast, open source system does not have this kind of restrictions.

What is hacker? There are two meanings of hackers. The first meaning of hacker is a person who accesses a computer system in inappropriate way and duplicates stuffs from the computer system.


What is open source software? According to WIKIPEDIA, open source software is a computer software which the source code reserved for copyright holders under the software license. The content is freely edited by users.


What is copyleft? It is a new form of licensing that involves using copyright law to remove restrictions on distributing copies and modified versions of a work for others.