[ih] Intel 4004 vs the IMP

[Timothy J. Salo]

I think we all agree that the IMP was a pretty limited machine.  From
the backup slides of a presentation of mine:

Early ARPANET router, Interface Message Processor (IMP), (1969):
o 16-bit words, 12-16 K-word memory
o 100-μsec clock (10 KHz)
o Early ARPANET links: 56 kbps
o 0.18 clock cycles per bit

I have argued that this, 12-16 K words of memory, is why we had the
end-to-end argument (which morphed into a principal and then into a
canon).

(The rest of the presentation pretty much ignores the end-to-end
argument.)

Also from this presentation:

Early NSFNET router: DEC LSI-11/73 (1983) with Fuzzball router
o 512 KB memory
o (15.2 MHz)
o 271 clock cycles/bit

-tjs