13 May
2018
13 May
'18
8:52 a.m.
On Saturday, 12 May 2018 at 11:04:26 -0400, Clem Cole wrote:
On Fri, May 11, 2018 at 6:21 PM, Dave Horsfall
<dave(a)horsfall.org> wrote:
That's an interesting document, but it refers to the Z1, not the Z3.
But Wikipedia confirms that the Z3 also didn't have conditional
instructions.
Conditional branch is only one way to do that, of course. The PDP-8,
for example, didn't have one, just (like many machines of the day)
conditional skip instructions.
Greg
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Way back on this day in 1941, Conrad Zuse
unveiled the Z3; it was the
first programmable automatic computer as we know it (Colossus 1 was not
general-purpose). The last news I heard about the Z3 was that she was
destroyed in an air-raid...
This pretty much started computing, as we know it.
But .. until we also include a conditional branch the ability to do
self modify code we don't really have the machine with think of as
the automatic programmable computer.
Check out:
http://page.mi.fu-berlin.de/rojas/1993/Who_invented_the_computer.pdf its a
fun read.