Computer Parts

Main Components of a Computer

  • CPU: Acts as the brain of the computer, executing instructions. Measured in gigahertz (GHz). Needs cooling via heat sinks due to heat generated from transistors.

  • RAM: Temporary, volatile memory that stores currently running programs. Data is erased when power is off. More RAM allows for more applications to run simultaneously. Suggested minimum for modern systems: 16 GB.

  • Hard Drive: Main storage device, can be either:

    • HDD (Hard Disk Drive): Mechanical, slower, non-volatile.

    • SSD (Solid State Drive): Faster, newer technology with no moving parts, more expensive.

Data Storage Concepts

  • Volatile vs. Non-volatile Memory:

    • Volatile: Loses data when power is off (e.g., RAM).

    • Non-volatile: Retains data when power is off (e.g., hard drives).

Data Processing Flow

  • Data to be accessed (e.g., opening a picture) is stored on the hard drive.

  • CPU primarily reads from RAM, which receives data from the hard drive via the motherboard.

  • Speed of components affects overall computer performance; all must be adequately fast to avoid bottlenecks.

Motherboard

  • Central hub connecting all components (CPU, RAM, storage, expansion cards).

  • Provides power connectors and various ports (USB, monitor, etc.).

Power Supply

  • Converts AC to DC power for computer components. Measured in watts; higher configuration needs more wattage (e.g., gaming PCs).

  • Symptoms of a failing power supply include random shutdowns and failure to boot.

Cooling Systems

  • Essential to prevent overheating. Methods include:

    • Fans: Circulate air to cool components.

    • Heat Sinks: Help dissipate heat from CPUs.

    • Thermal Paste: Applied between CPU and heat sink for effective heat transfer.

    • Liquid Cooling: Quieter and more efficient than fans.

Summary

  • The balance of CPU, RAM, and storage type is crucial for a well-performing computer. An upgrade, especially from HDD to SSD, can significantly improve speed and performance. Proper cooling and power supply are also critical for maintaining stability and functionality.