“I think there is a world market for maybe five computers.” So said Thomas Watson, president of IBM, in 1943.

Back in the 1960s, when I was born, we already had way more than five computers. We even had spacecraft that went to the moon with computers on them, so we already had mobile computing devices. However, the Apollo Guidance Computer had 4 KB RAM, 72 KB of read-only storage, and a 2 MHz, 16-bit, single-core CPU. My current phone has 3 GB RAM, 32 GB of built-in storage and 128 GB SD storage, and a 1.8 GHz, 64-bit, six-core CPU. Back in the 1960s, we already had mobile phones, too, but they had to be installed in cars, because they relied on lead-acid batteries and drew 250 watts.

The marriage of mobile computing and mobile ...

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