Re: mainframe vs mini, old and slow base and bounds, Why I've Dropped In

On Mon, 23 Jun 2025 13:23:02 +0000, EricP wrote:

The 24-bit Four-Phase Systems AL1 (1969) was 9 chips claims to be first.
>
The 20-bit Garrett AiResearch CADC (1970) which also claims to be the
first microprocessor chip set was MOS based and used the the F14
fighter.

Those were the two "exotic exceptions" that I was thinking of.
On the other hand, the 4004 wasn't exotic. And since the Intel 8008
dates from 1972, I was wrong to think that 8-bit microprocessors were
nonexistent in 1973, so it was not correct for me to claim that it was
impossible for the IBM 370/115 to have used some sort of microprocessor
as its basis - even if I still would tend to suspect that it was
unlikely.
John Savard