Basic Care & Maintenance of Computer/GSM

TITLE:

Basic Care & Maintenance of Computer/GSM

PREVIOUS KNOWLEDGE:

Students can identify basic computer and GSM components, know safety precautions, and use simple tools.

OBJECTIVES

By the end of this lesson, students should be able to:

1. Clean a computer or GSM device safely.

2. Charge a device correctly and understand charging signals.

3. Care for a battery to extend its life.

INSTRUCTIONAL MATERIALS:

- Soft microfiber cloth

- Compressed air can

- Isopropyl alcohol (70 percent)

- Small brush

- USB charger and cable

- Battery charger (if separate)

- Protective gloves

CONTENT

Cleaning

Cleaning a computer or GSM device means removing dust and grime from the surface and internal parts. For example, a student in Lagos who keeps a phone on a wooden table may notice the screen getting smudged after a week of use. To clean, first turn off the device and unplug it. Use a dry microfiber cloth to wipe the screen gently. If there is stubborn dirt, dampen the cloth slightly with water or a small amount of isopropyl alcohol. Never spray liquid directly onto the device.

Charging

Charging a device means supplying power from a charger to the battery. For instance, a student in Kano may use a USB charger to power up a laptop before school. To charge, connect the charger to the device and plug the outlet into a wall socket. Watch the charging indicator – a light or icon that shows the battery level. When the device is fully charged, the indicator will change colour or turn off. Always use the charger that came with the device or a certified replacement.

Battery Care

Battery care involves practices that keep a battery healthy and prolong its use. Imagine a student in Ibadan who uses a phone all day for homework and games. If the battery is left plugged in all the time, it may overheat and lose capacity. To care for the battery, avoid letting it drop below 20 percent or stay at 100 percent for long periods. Store the device in a cool, dry place when not in use. If the battery is removable, keep it in a plastic bag and avoid exposure to extreme heat.

COMMON MISTAKES:

- Using a wet cloth that drips liquid onto the device.

- Leaving the charger plugged in after the device is fully charged.

- Keeping a battery at full charge for days, causing heat build‑up.

EVALUATION

1. What should you do before you start cleaning a computer or GSM device?

2. How can you tell when a device is fully charged?

3. Why is it important not to leave a device plugged in after it is fully charged?

4. What temperature should you store a battery in to keep it healthy?

5. Name one tool you can use to remove dust from a device's vents.

SUMMARY

In this lesson we learned how to clean, charge, and care for batteries in computers and GSM devices. We saw that cleaning keeps devices looking new and prevents dust damage. We also understood that charging correctly protects the battery and that proper battery care extends its life. By following these steps, you can keep your devices running smoothly for longer periods.

- Clean devices with dry or lightly damp cloths, never spray liquids.

- Watch charging indicators and unplug when full.

- Store batteries in cool, dry places and avoid extreme heat.