Time to peel up yet another layer! In fact, it's that tough plastic backing we encountered earlier. It's aggressively glued, so we aggressively, well, ripped in in half...

Finally, the true keyboard is revealed—a plane of switches and chips!

The brains of the operation is Apple's latest go-to microcontroller for peripheral input devices:

STMicroelectronics STM32F103VB 72 MHz 32-bit RISC ARM Cortex-M3

Macronix MX25L4006EZUI-12G 4 Mb serial flash memory