|
Basics: Infringement and Fair Use The Yet copyright laws also provide that the rights of copyright owners are subject to the doctrine of " - the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes (usually certain types of educational copying are allowed) - the nature of the copyrighted work (mostly originals made for commercial reasons are less protected than their purely artistic counterparts) - the amount and substantiality of the portion used in relation to the copyrighted work as a whole - the effect of the use upon the potential market for or value of the copyrighted work (as a general rule copying may be permitted if it is unlikely to cause economic harm to the original author) Examples of activities that may be excused as fair use include: providing a quotation in a book review; distributing copies of a section of an article in class for educational purposes; and imitating a work for the purpose of parody or social commentary. | |||||||||||||||||||||||||||||||||||||
|
| |||||||||||||||||||||||||||||||||||||
|
Late 1960s - Early 1970s: Third Generation Computers One of the most important advances in the development of computer hardware in the late 1960s and early 1970s was the invention of the Another type of computer developed at the time was the minicomputer. It profited from the progresses in microelectronics and was considerably smaller than the standard mainframe, but, for instance, powerful enough to control the instruments of an entire scientific laboratory. Furthermore | |||||||||||||||||||||||||||||||||||||
|
| |||||||||||||||||||||||||||||||||||||
Polybius Checkerboard
It is a system, where letters get converted into numeric characters. The numbers were not written down and sent but signaled with torches. for example: A=1-1 B=1-2 C=1-3 W=5-2 for more information see: | |||||||||||||||||||||||||||||||||||||
|
| |||||||||||||||||||||||||||||||||||||
|
Amazon.Com Amazon.Com was one of the first online bookstores. With thousands of books, CDs and videos ordered via the Internet every year, Amazon.Com probably is the most successful Internet bookstore. | |||||||||||||||||||||||||||||||||||||
|
| |||||||||||||||||||||||||||||||||||||