What is Hard Disk? How does it works?

Guys this is new series that i'm going to start i.e The Explain in this series I'm going to explain various technology related topics with most simplified language and with examples. Note: Digit 5's binary equivalent is 0101 not 1010. ================================================== Today we are going to talk about the HARD DISK's. Hard Disk's are the most commonly used storage medium in today's world so today let's see how this storage device works I will also provide some advantages and disadvantages so the topic will more clear. ================================================== Thanks for watching! Like,Share and Subscribe!