Difference between analog and digital computer ??

The analogue computer works on a continuous signal. The digital computer works on a discrete signal. The output is a voltage signal, they are not exact values and are in graphical form.

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.

that without the operating systems you would have to control and synchronize computer hardware.