WCI1011 Chapter 1

Chapter 1: Introduction to Personal Computer Hardware

1.1 Personal Computers

  • Importance of keeping personal computer components safe.

  • Understanding essential PC components.

  • Importance of electrical and ESD safety.

1.1.1 Electrical Safety

  • Electrical devices have specific power requirements.

  • AC adapters are designed for specific laptops; using incorrect adapters can cause damage to devices.

  • Some printer components may contain high voltage; follow guidelines for safety to prevent electrical fires and injuries.

1.1.2 Electrostatic Discharge (ESD)

  • ESD occurs when an electric charge on a surface contacts another charged surface, potentially damaging equipment.

  • Static electricity must reach at least 3,000 volts before becoming perceptible.

  • Recommendations to prevent ESD damage include:

    • Keep components in antistatic bags.

    • Use grounded mats in work areas.

    • Use antistatic wrist straps when working inside computers.

1.1.3 Safety Lab

  • Practical lab experience focusing on personal, electrical, and fire safety while building or servicing computer hardware compliant with government regulations.

1.2 PC Components

1.2.1 Features and Functions

  • Detailed understanding of various computer components and their functions:

    • Cases and power supplies

    • Motherboards

    • CPUs (Central Processing Units)

    • Types of memory (RAM, ROM)

    • Adapter cards and expansion slots

    • Hard disk drives and SSDs

1.2.2 Optical Storage Devices

  • Explanation of features and functionalities, including those of ports, cables, and adapters.

  • Description of input and output devices and their roles.

1.3 Disassembling a PC

  • Understanding the components of a technician's toolkit.

  • Step-by-step process to safely disassemble a computer while observing safety procedures.

    • Initial power down and disconnection of peripherals before component removal.

    • Care with locating and removing the correct components; ask for assistance when needed.

Chapter Summary

Key Takeaways

  • Safety procedures for personal computer components.

  • In-depth understanding of hardware features and functions.

  • Step-by-step guidance on disassembling a PC.