Which one of the following is not necessary for a computer?
Which one of the following is not necessary for a computer?
(A) RAM
(B) Hard Disk
(C) Operating System
(D) LAN Card
LAN Card (also known as a Network Interface Card) enables a computer to connect to a network or access the internet, but it is not needed for the computer to turn on, perform basic operations, or execute programs. In contrast, the following are necessary for a functional modern computer:
RAM is the temporary memory that holds current data and instructions that the CPU must access immediately.
Hard Disk (or equivalent storage device) is the permanent storage location for files and the operating system.
The Operating System is the master software program that manages hardware and allows the user to run applications.