[truantbuick]

As far as I can tell, he uses "word" in the same way it's used today.

https://en.wikipedia.org/wiki/Word_(computer_architecture)

But, he does say a "word" is the information of 6 letters or 10 numbers, which is a bit curious.

My understanding is the most encodings for letters in 1960s were 6 bits, so that would perhaps imply a 36-bit word for Dr. Corbato's computer. But then, if you have to fit ten of them into a word, you could only use up to 3-bit integers, which doesn't sound right.

[stelonix]

Well, I meant he used words instead of bytes, even if in some architectures, a word was a byte. That's because the term "word" was more widely used back then from what I can tell. Nowadays it's much more meaningful to give the actual size in bytes rather than words simply because 8-bit bytes are common throughout most modern computer systems.

[kps]

Ten decimal digits. 10 < log₁₀(2³⁵) < 11

[truantbuick]

Ah, thank you! That explains it.