How Hard Drives works?

Animated version presented by TED-ED
A more in-depth version presented by Branch Education.

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乐手笑话分享

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This printer identifies as Bob Marley because it just keeps on jammin. 图片上一个经典的双关语笑话： “ Jammin ’” 是 Bob Marley 非常著名的一首歌的名字（《Jammin’》） “jam”有另一个意思—— “卡纸” 笑点：将打印机的卡纸问题与Bob Marley的音乐风格结合起来，创造了一种幽默和非同寻常的关联。 
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A Travel Clock from the Year of 2000

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Yesterday, while searching the office storage room for discontinued products to test for a customer inquiry, I stumbled upon an old travel clock. It’s a slim model powered by a single CR2032 battery — the same type we use in many of our products. Luckily, I found a working one and, with the help of my trusted multimeter, replaced the dead battery. When I turned it on, the default date and time read January 1st, 2001, 00:00:00 . Without a manual handy, I experimented with the buttons on the back and eventually figured out that pressing and holding the Time Set button allowed me to manually adjust the time. As I pressed the buttons to set the correct date, a strange mix of excitement and shock washed over me. I was thrilled to see that, after 25 years, this tiny device still worked perfectly. At the same time, I was struck by the passage of time — I had to press the UP button 24 times to move the year from 2001 to 2025. The experience also brought back a childhood memory. I used to set...
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