The peripheral devices of a basic computer system does NOT include :

The correct answer is the CPU.

Key Points

• A peripheral device, also sometimes called an auxiliary device, is any connected device (internal or external) that provides a computer with additional functionality.
• Peripheral devices fall into three main categories:
  • Input devices, which send data to the computer.
  • Output devices, which receive data from the computer.
  • Input/output devices, such as storage devices.
• Examples:
  • Mouse
  • Keyboard
  • Webcam
  • Microphone
  • Monitor
  • Speakers
  • Projector
  • Printer
  • USB Flash Drive
  • External Hard Drive

Additional Information

• A keyboard is a primary input device that allows users to input text into the computer or any other electronic machinery.
• A monitor is an output device that displays a Video Display terminal or video display unit in the form of a document.
• A CPU stands for Central Processing Unit that is responsible for executing instructions which constitutes a computer program.
• Arithmetic and Logical unit reside inside it. 

Confusion Points CPU is not a peripheral device because a computer system can not work without a CPU.