Necessity
As mentioned earlier, some computer programs need no installation. This was once usual for many programs which run on DOS, Mac OS, Atari TOS and AmigaOS. As the computing environment grew more complex however, the need for tangible installation presented itself.
Nowadays, a class of modern applications that do not need installation are known as portable applications, as they may be roamed around onto different computers and run. Similarly, there are live operating systems, which do not need installation and can be run directly from a bootable CD, DVD, or USB flash drive. Examples are AmigaOS 4.0, various Linux distributions, MorphOS or Mac OS versions 1.0 through 9.0. (See live CD and live USB.) Finally, web applications, which run inside a web browser, do not need installation.
Read more about this topic: Installation (computer Programs)
Famous quotes containing the word necessity:
“No picture of life can have any veracity that does not admit the odious facts. A man’s power is hooped in by a necessity which, by many experiments, he touches on every side until he learns its arc.”
—Ralph Waldo Emerson (1803–1882)
“No use saying necessity is making a mistake.”
—Mason Cooley (b. 1927)
“I don’t believe in villains or heroes, only in right or wrong ways that individuals are taken, not by choice, but by necessity or by certain still uncomprehended influences in themselves, their circumstances and their antecedents.”
—Tennessee Williams (1914–1983)