Energy Star
The HAL (hardware abstraction layer) is the layer between the OS and the hardware
They do not. An OS is specific to processor and hardware type.
OS's manage hardware by creating a uniform set of functions or operations that can be performed on various classes of devices (for instance read x bytes at address y from hard drive of any type). These general functions rely on a layer of drivers that provide specific means to carry out operations on specific hardware. Drivers are usually provided by the manufacturers, but the OS must provide a way to load and use drivers, as well as detect the device and select an appropriate driver if several are available.
hardware control is a operating system. OS is used to control the elctronic devices(hardware) via user. because user can't control hardware directly so, OS is used to interface computer & user
The Mac OS is the operating system that runs a Macintosh computer. First introduced in 1984 it is now in it's tenth version which is known as Mac OS X. It is used by programmers to provide a standard means of communication between their software and the Mac's hardware. It is used by users to manage and organise their work.
depends on what OS you are using.
As we know that the OS is used to operate every device through the drivers present in the OS. So without the OS we cannot communicate with the devices (hardware). For every device some drivers are required to run them and these drives are provided by the operating system. So by this we can see that the OS provides the interface between the user and the hardware, as user does not make the device work he uses the OS.
it is kernels dt iteract directly with computer hardware
The OS is stored in the Hard Disk of the computer.
Using drivers.
Operating system is the system which bridge the gap between the computer user and hardware peripherals. It also associate all the hardwares properly. OS acts as the nervous system in the human body.