Lecture Notes - Module 1.1: Computers in Our Everyday Lives

Introduction

• Focus on why we use computers and types of computer systems.
• Combination of previous grades (10, 11) and new grade 12 material.
• Key topics: Categories of users and convergence.

Why We Use Computers

• Efficiency: Saves time, labor, resources.
• Accuracy: Provides more accurate results.
• Reliability: Consistent performance.
• Communication:
  • Eliminates time and distance issues.
  • Facilitates global communication and social interaction.

Types of Computer Systems

• Considerations when comparing devices: power, use, size, software.
• Non-portable Computers:
  • Desktops: Not meant for mobility, larger, more powerful.
  • Servers: Often more powerful than consumer desktops.
  • Entry-level computers: Cheaper, lower specs.
• Portable Computers:
  • Laptops, Tablets, Smartphones: All-in-one design, easy to carry.
  • Modular design: Allows for hardware customization, less so in portables.

Modular Design

• Desktops offer modularity (e.g., change CPU, memory, graphics card).
• Laptops and smartphones are less modular.

New Technologies

• Head-Mounted Displays (HMDs):
  • Used in VR and AR.
  • VR: Fully digital environment.
  • AR: Digital overlay on the real world.
• Drones/Unmanned Aerial Vehicles:
  • Aircraft devices, not piloted.
  • Uses: Surveillance, delivery (e.g., Amazon).

Categories of Users

1. Personal User:
   • Limited office tasks, entertainment, social networking.
2. Small Office Home Office (SOHO) User:
   • Tasks vary based on business type.
   • Entry-level computers for admin functions.
3. Power User:
   • High-end hardware/software needed.
   • Includes gamers, video editors, engineers, etc.
4. Mobile User:
   • Needs technology on-the-go.
   • Uses smartphones/tablets for various tasks.

Convergence

• Trend of combining separate technologies/functions into a single device.
• Example: Smartphones and tablets.

End of Module 1.1