Even then it was not universal. For example, that Apple I ad that got posted a few days ago mentioned that "the system is expandable to 65K". https://upload.wikimedia.org/wikipedia/commons/4/48/Apple_1_...

kstrauser 2 days ago | parent | next [-]

Someone here the other day said that it could accept 64KB of RAM plus 1KB of ROM, for 65KB total memory.

I don't know if that's correct, but at least it'd explain the mismatch.

wvenable 2 days ago | parent | prev [-]

Seems like a typo given that the ad contains many mentions of K (8K, 32K) and they're all of the 1024 variety.

If you're using base 10, you can get "8K" and "32K" by dividing by 10 and rounding down. The 1024/1000 distinction only becomes significant at 65536.

	▲	wvenable 2 days ago \| parent [-]
		Still the advertisement is filled with details like the number of chips, the number of pins, etc. If you're dealing with chips and pins, it's always going to base-2.