The permanent memory of a computer is the

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The permanent memory of a computer is the

  1. ALU
  2. CPU
  3. RAM
  4. ROM ✓

Explanation

ROM (Read-Only Memory) is the permanent memory of a computer. It retains its data even when the computer is turned off, which is why it is called non-volatile memory.

ROM contains essential instructions that the computer needs to start up (boot). This includes the BIOS (Basic Input/Output System) that initializes hardware and loads the operating system. This data is written during manufacturing and cannot normally be changed by the user.

ALU (Arithmetic Logic Unit) is part of the CPU that performs calculations and logical operations – it is not memory. CPU (Central Processing Unit) is the processor that executes instructions. RAM (Random Access Memory) is temporary memory that loses data when power is off.

While ROM is permanent, it is limited in size and used only for essential startup functions. The bulk of computer operations use RAM for temporary storage during program execution.