Why do I feel that the cursor is running around after I plug in the

This course was created with the

course builder. Create your online course today. Start now

Create your course with

ย้อนกลับ เสร็จสิ้นและไปบทถัดไป

Why do I feel that the cursor is running around after I plug in the frog handle, or the numeric keys are entered randomly?

Lesson content locked

If you're already enrolled, you'll need to login.

Enroll in Course to Unlock