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Ethical, legal, cultural and environmental concernsThe use of computers has brought about ethical, legal, cultural and environmental impacts. These issues increasingly affect people's daily lives. One way to classify
software is through ownership and
licensing. There are two types of ownership and licensing software: While both types of software are usually widely
available, they differ quite considerably in what can and cannot be done. Open source software can be free of copyright and is usually available to anyone. Proprietary software is copyrighted and only available under licence. Open source software can be free of
copyright and is usually available to anyone. Open source software has several
advantages:
Open source software has its disadvantages too:
Examples of open source software include:
Proprietary softwareProprietary software is software that is copyrighted, which means it can only be obtained by paying for a licence. Proprietary software has many advantages:
Proprietary software also has a number of disadvantages:
Examples of proprietary software include:
GCSE Subjects
What is system software?System software is a type of computer program that is designed to run a computer's hardware and application programs. If we think of the computer system as a layered model, the system software is the interface between the hardware and user applications. The operating system is the best-known example of system software.
What does the system software include from the following?Systems software are programs that manage the resources of the computer system and simplify applications programming. They include software such as the operating system, database management systems, networking software, translators, and software utilities.
Which of the following Web browsers is an example of open source software?Google Chrome is built on Google's free and open-source software project Chromium, and is a major component of Google's operating system ChromeOS.
How does software work?This involves passing instructions from the application software, through the system software, to the hardware which ultimately receives the instruction as machine code. Each instruction causes the computer to carry out an operation—moving data, carrying out a computation, or altering the control flow of instructions.
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