Question

How operating system acts as messenger between hardware and application program?​

Answer 1

Operating System acts as a 'messenger' between hardware and application programs by ensuring or by establishing a connection between the application and the hardware device, such as a printer attached to a computer.

$Operating \: System \: acts \: as \: a 'messenger' \\ \: between \: hardware \: and \: application \: programs \: by \: ensuring \\ \: or \: by \: establishing \: a \: connection \: between \: \\ the \: application \: and \: the \: hardware \\ device, \: such \: as \: a \\ printer \: attached \: to \: a \: computer.$

Answer 2

Answer:

By ensuring or by establishing a connection between the application and the hardware device such as printer is attached to a computer