Question

which operating system allows only one user to work with the computer at time​

Answer 1

Answer:

An operating system that allows a single user to perform only one task at a time is called a Single-User Single-Tasking Operating System

Answer 2

Answer:

$\bold\orange{An operating system that allows a single user to perform only one task at a time is called a Single-User Single-Tasking Operating System. Functions like printing a document, downloading images, etc., can be performed only one at a time. Examples include MS-DOS, Palm OS, etc.}$