>Not true. Model 33 teletypes were still in use in the 70s (left arrow >and up arrow, NOT _ and ^). DEC-10 Prolog, developed in the late 70s, >was initially upper-case-only because printers with lower case letters >were not sufficiently widely available at that time; by 1979 lower case >was the default. The unavailability of lower case printers, of course, letters doesn't support your argument that technology of the times dictated the choice of using lower case for space separation.
Once again, I do wish people would read and think before posting. That particular fragment *obviously* does not and is not intended to support that claim. It was, in context, obviously intended to refute (and succeeded in refuting) the counterclaim that ASCII-67 was universally adopted. While not intended as such, the long delay before we could rely on lower case supports the converse claim: that languages like PL/I and Burroughs Algol and (early) DEC-10 Prolog used low-line separation because they couldn't use baStudlyCaps.
As far as I have been able to discover from the Alto manuals I've been able to dredge up, the Alto character set really *was* ASCII-63. *That* is the basis of my claim that Smalltalk used baStudlyCaps because it had to. Smalltalk was implemented on Altos. There was a series of Smalltalks; I've seen a Smalltalk-72 manual. (Not that I remember anything about it.)
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