Branch Education — searchable YouTube transcripts & AI Q&A

What Exactly Happens when you Tap your Credit Card? 💳📡

Tap-to-pay credit cards are powered wirelessly by the payment terminal's oscillating magnetic field, which induces a voltage in the card's antenna coil. The card communicates back by modulating the load on that field, and the transaction is secured through asymmetric cryptography for authentication and symmetric cryptography to prevent tampering. The speaker explains that the card's EMV chip is computationally comparable to a PlayStation 1, and notes that while the process is secure, there are still potential exploits.

How can microSD Cards Store So Much Data? 💾🔬

Explains how microSD cards store vast amounts of data using 3D stacked NAND flash memory cells.

Why Don’t Computers Just Use One Type of Memory? 🖥️💿🛠️

Computers use many memory types because each has different speeds, capacities, and costs, creating a hierarchy for optimal performance.

The Incredible Evolution of Computers

Explore the evolution of computers from room-sized mainframes to smartphones and AI, focusing on technological advancements beyond just transistor count.

The Engineering that Runs the Digital World 🛠️⚙️💻 How do CPUs Work?

Explains how CPUs work by comparing old and new processors and using an analogy of a calculator with bookshelves and a robot.