A(n) ____ is a set of programs designed to manage the resources of a computer, including starting the computer, managing programs, managing memory and coordinating tasks between input and output devices.

A program that acts as an intermediary between a user of a computer and the computer hardware is called ____.

In which transmission mode is the communication one-way with the channel?

Computers, which combine both measuring and counting, are called ____.

Computers that are used in large organizations such as insurance companies and banks, where many people frequently need to use same data, are ____.