Reviewer for Computer Hardware Servicing

Reviewer for Computer Hardware Servicing

Lesson 1: Hand Tools Used in Computer Hardware Servicing

Proper Tool Selection

• A tool is a device that aids in completing tasks, from physical machine parts to software elements.

• Always use tools as designed and avoid using them for purposes they weren't intended for.

Safe Use of Tools

• Use tools for their intended purpose.

• Many tools include safety guidelines, follow them to ensure safety.

• Operator judgment should prioritize safety during use.

Environmental Safety and Health Program Requirements

• Regular tool maintenance is crucial.

• Always use the right tool for the job.

• Inspect tools for damage before use. Do not use defective tools.

• Follow the manufacturer's instructions when using tools.

• Use proper protective equipment when necessary.

Categories of Tools

1. Electro-Static Discharge (ESD) Tools

   • Anti-static wrist strap: Prevents ESD damage to computer equipment.

   • Anti-static mat: Prevents static electricity buildup on surfaces and when standing.

2. Hand Tools

   • Flat head screwdriver: Loosens or tightens slotted screws.

   • Philips head screwdriver: Loosens or tightens cross-head screws.

   • Torx screwdriver: Loosens or tightens starlike screws (commonly found on laptops).

   • Hex driver (nut driver): Tightens nuts.

   • Needle-nose pliers: Holds small parts.

   • Wire cutter: Strips and cuts wires.

   • Tweezers: Manipulates small parts.

   • Part retriever: Retrieves parts from hard-to-reach locations.

   • Flashlight: Provides light to dark areas.

   • Wrenches: Tightens and loosens nuts/bolts. Types include open-end, box-end, and adjustable.

3. Cleaning Tools

   • Lint-free cloth: Cleans without scratching or leaving debris.

   • Compressed air: Removes dust and debris without touching components.

   • Cable ties: Neatly bundles cables.

   • Parts organizer: Holds small parts like screws and jumpers.

4. Diagnostic Tools

   • Multimeter: Tests circuits and electricity quality.

   • Loopback adapter: Tests computer port functionality.

Proper Handling Techniques

• Use the correct grip and firm hold to prevent slips.

• Always use tools for their intended purpose and maintain them to ensure safety.

Safety Gear Recommendations

• Gloves protect against cuts and abrasions.

• Goggles shield eyes from debris.

• Dust masks prevent inhaling harmful particles.

Lesson 2: Computer Storage Devices

Types of Storage Devices

1. Disk Drives (HDD)

   • Uses spinning disks to read/write data.

   • Larger capacity but slower and more prone to failure.

2. Solid State Drives (SSD)

   • Uses flash memory for faster access times.

   • No moving parts, making them more durable and energy-efficient.

3. USB Flash Drives

   • Portable storage devices connected via USB.

   • Uses flash memory, available in different capacities for easy file transfer.

Storage Capacity

• Measuring Storage Size:

  • Storage is measured in bytes. Larger sizes are expressed as KB (Kilobytes), MB (Megabytes), GB (Gigabytes), and TB (Terabytes).

  • 1 GB = 1024 MB.

• GB vs TB:

  • 1 TB = 1024 GB. TB is used for larger data needs, while GB is more suited for smaller storage.

• Choosing the Right Storage:

  • HDD: Best for large storage at lower costs.

  • SSD: Best for speed and durability.

  • USB Flash Drive: Best for portability.

Conclusion

• Understanding the types of storage devices, their capacities, and how to select the right one is crucial for efficient data management. Each type has strengths and weaknesses that make them suitable for different purposes.