An operating system is a generic term for the multitasking software layer that lets you perform a wide array of 'lower level tasks' with your computer. By low-level tasks we mean:
the ability to log on with a username and password
log off the system and switch users
format storage devices and set default levels of file compression
install and upgrade device drivers for new hardware
install and launch applications such as word processors, games, etc
set file permissions and hidden files
terminate misbehaving applications
A computer would be fairly useless without an OS, so today almost all computers come with an OS pre-installed. Before 1960, every computer model would normally have it's own OS custom programmed for the specific architecture of the machine's components. Now it is common for an OS to run on many different hardware configurations.
At the heart of an OS is the kernel, which is the lowest level, or core, of the operating system. The kernel is responsible for all the.
lunes, 26 de noviembre de 2012
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