Answer:
Operating system (OS).
Explanation:
An operating system is a system software pre-installed on a computing device to manage or control software application, computer hardware and user processes.
This ultimately implies that, an operating system acts as an interface or intermediary between the computer end user and the hardware portion of the computer system (computer hardware) in the processing and execution of instructions.
Some examples of an operating system on computers are QNX, Linux, OpenVMS, MacOS, Microsoft windows, IBM, Solaris, VM etc.
Basically, an operating system (OS) ensures proper allocation of memory to processes and manages all the input/output devices that are connected to the computer.
Hence, the Operating system (OS) provides services such as user interface, file database access, and interfaces to communications systems.
