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.