Question

________ is also called the brain of the computer.
1. SMPS
2. CD drive
3. Hard disk
4. CPU

Answer 1

Correct Answer - Option 4 : CPU

The correct answer is CPU.

• CPU
  • The full form of CPU is Central Processing Unit.
  • CPU is the brain of the computer. Hence, Option 4 is correct.
  • The Central Processing Unit is also known as the Central Processor, Main Processor, or Processor.
  • The first commercial CPU was invented by Italian Physicist Federico Faggin.
  • The first commercial CPU was the Intel 4004 released by Intel in 1971.
  • The following are the functions of the CPU:
    • Executes instructions related to the computer program.
    • Performs basic arithmetic, logic, controlling, and input/ output operations.

SMPS	It stands for switch-mode power supply. Its job is to convert wall-voltage AC power to lower voltage DC power.
CD drive	In computing, an optical disc drive (ODD) is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs.
Hard disk	Hard disk, also called hard disk drive or hard drive, magnetic storage medium for a computer. Hard disks are flat circular plates made of aluminium or glass and coated with magnetic material.