Question

Permanent Memory of a computer is known as-
1. RAM
2. CD-ROM
3. ROM
4. CPU

Answer 1

Correct Answer - Option 3 : ROM

The Correct Answer is ROM.

• The permanent memory of a computer is known as ROM(Read-only memory).
• In computers and other electronic devices, read-only memory (ROM) is a form of non-volatile memory.
• After the memory unit is manufactured, data contained in ROM cannot be electronically changed. Read-only memory, also known as firmware, is useful for storing software that is rarely updated during the life of the device.
• Plug-in cartridges containing ROM can be used to distribute software applications (such as video games) for programmable computers.
• Read-only memory refers to memory that is hard-wired and cannot be modified electronically after manufactures, such as a diode matrix or a mask ROM integrated circuit (IC).

• The memory is permanently installed on your computer. This is a read-only memory. The working memory of a computer, also known as random-access memory. The hardware allows data to be passed through a device. 
• Random-access memory (RAM) is a type of computer memory that allows data and machine code to be read and modified in any order. It is commonly used to store working data and machine code.
• A CD-ROM is a data-containing optical compact disc that has been pre-pressed. CD-ROMs are a form of read-only memory that computers can read but not write to or delete.
• The electronic circuitry that executes instructions in a computer programme is known as a central processing unit (CPU), also known as a central processor, main processor, or simply processor.