Acts as the middleman between the user and the computer hardware.
Allows user to run other application on a computing device.
Manages the software and hardware.
Software that supports computer’s basic function.
The heart operating system and “the one program running at all times on the computer” .
____ (aka bootloader) is loaded at power-up or reboot .
Bootstrap program is also known as _____.
Typically stored in ROM or EPROM, generally known as firmware .
Initializes all aspects of system.
Loads operating system kernel and starts execution.
One or more CPUs, device controllers connect through common bus providing access to shared memory.
Copying of data from slower to faster storage temporarily.
Allows data transfer from main memory to a device without CPU intervention.
Used for high-speed I/O devices that are able to transmit information at close to memory speeds.
The only large storage media that the CPU can access directly.
also known as RAM.
Can store large amount of data.
acronym of ROM.
acronym of HD.
acronym of SSD.
The most common storage composed of magnetic disks.
Faster than magnetic disks .
Has one main CPU or “core” for executing general purpose instruction set .
May have special-purpose or device-specific processors, for instance disk, keyboard, graphics controllers.
Also called parallel systems or multicore systems.
Like multiprocessor systems, but with multiple systems working together .
Provides a high-availability service which survives failures.
the acronym of RAM.
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