Name any two devices which use permanent magnets.

Explanation

To answer the question, "Name any two devices which use permanent magnets," we can follow these steps:

### Step 1: Understand what permanent magnets are
Permanent magnets are materials that maintain a persistent magnetic field. Their magnetic properties are inherent to the material itself, meaning they do not require an external power source to exhibit magnetism.

### Step 2: Identify devices that utilize permanent magnets
Permanent magnets are commonly used in various devices. Some examples include:

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