Question

The operating system that allows only one program to run at a time is​

Answer 1

Single-User/Single-Tasking OS

Step-by-step explanation:

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