12 Jun
2006
12 Jun
'06
11:13 p.m.
Tony Duell wrote:
FWIW, in 1972 the UK magazine 'Practical Electronics' published a design
(going over 10 issuses, I have the whole set) for a TTL-based 4-function
desktop calcualtor. Not a computer, sure, but a lot of the principles
were there.
Those who like to see something special should check
it out : it is a
two-address machine, no instructions, but memory-mapped "functional
units". It even had hardware based multiply and divide !
I'd love to see that, but my Elektor collections starts at about the time
of the first Elekturscope (and I don't have a complete run since then, alas)
-tony
----------------------------------------------------------------------------
---------
Hah,
I remember the PE calculator well. I actually built it, though I
restructured the boards to match some proto PCBs I had. To make it easier,
I copied out the articles and bound them together. I saw that binder in the
last few weeks - may have it here in OC. I'll look tonight. It's not a
great copy, but anyone is interested, I'll hit the Xerox at Kinko's. (I
doubt there's enough interest to be worth scanning.)
I have all the English editions of Elektor, but they are not easy to get to.
My garage is a solid mass of books and electronics. When I retire next
year, the top priority is to clean up that mess. eBay will be a full time
occupation for many many months. Some of the stuff is spoken for - I've
promised Al K. he can copy anything he wants before I sell it. I should
probably donate all the software to the Museum, but I still don't feel
positive about their permanence.
Billy
13 Jun
13 Jun
2:29 a.m.
----- Original Message -----
From: Billy Pettit <Billy.Pettit at wdc.com>
Date: Monday, June 12, 2006 6:14 pm
Subject: OT-ish: Build-it stuff / elektor
To: cctalk at classiccmp.org
Tony Duell wrote:
FWIW, in 1972 the UK magazine 'Practical Electronics' published a
design
(going over 10 issuses, I have the whole set) for a TTL-based 4-
function
desktop calcualtor. Not a computer, sure, but a lot of the
principles
were there.
Scan 'em! Scan 'em! I'd forgotten all about the PE Calculator...
Douglas Wood
Those who like to see something special should
check it out : it
is a
two-address machine, no instructions, but
memory-mapped
"functional
units". It even had hardware based multiply
and divide !
I'd love to see that, but my Elektor collections starts at about
the time
of the first Elekturscope (and I don't have a complete run since
then, alas)
-tony
-------------------------------------------------------------------
---------
---------
Hah,
I remember the PE calculator well. I actually built it, though I
restructured the boards to match some proto PCBs I had. To make
it easier,
I copied out the articles and bound them together. I saw that
binder in the
last few weeks - may have it here in OC. I'll look tonight. It's
not a
great copy, but anyone is interested, I'll hit the Xerox at
Kinko's. (I
doubt there's enough interest to be worth scanning.)
I have all the English editions of Elektor, but they are not easy
to get to.
My garage is a solid mass of books and electronics. When I retire
nextyear, the top priority is to clean up that mess. eBay will be
a full time
occupation for many many months. Some of the stuff is spoken for -
I've
promised Al K. he can copy anything he wants before I sell it. I
shouldprobably donate all the software to the Museum, but I still
don't feel
positive about their permanence.
Billy
10:28 p.m.
I remember the PE calculator well. I actually built
it, though I
Wow! I don;'t think I';d haev had the patience to put that together...
Even for the time, it was a very old-fashioned design with a lot of
hard-wired logic. Things like the HP9810 were contemporary and did a lot
more with few ICS (said machine used a processor + firmware sort of
structure).
Do you also rememebr the PE CHAMP (along with the CHAMPprog and CHAMPUV)?
That was a 4040-based computer system which fitted (not including the
PSU) onto one (large) piece of stripboard. The other 2 units were an
EPROM programmer and UV eraser, of course. I think I have all the
articles for that too...
-tony
14 Jun
14 Jun
8:42 p.m.
Do you also rememebr the PE CHAMP (along with the
CHAMPprog and
CHAMPUV)?
That brings back memories (no pun intended :-)). I remember thinking
"that's neat" and then within a few months ETI one-upped it several
Times over by starting an 8080 design (at least I think it was 8080,
Certainly it was 8-bits). Some time later PE came out with the UK101.
I'm pretty sure I have all the PE articles for both of those around
Somewhere and possibly the ETI ones (I used to buy PE every month from
About 1978 to the late 1980s; ETI I just bought when it looked worth
it).
Antonio
17 Jun
17 Jun
1:52 a.m.
I remember the articles for the PE champ in Practical
Electronics. I was desperate to build one but at the
time I had neither the expertise nor the funds to
build it - if memory serves me correctly the CHAMP was
constructed on Veroboard with heaps of cross-board
wiring. A few years back I again considered building
one, but the challenge today lies in obtaining many of
the rarer parts. Still - maybe someone has a completed
CHAMP project out there somewhere ?
-Dave
--- Antonio Carlini <arcarlini at iee.org> wrote:
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Do you also
rememebr the PE CHAMP (along with the
CHAMPprog and
CHAMPUV)?
That brings back memories (no pun intended :-)). I
remember thinking
"that's neat" and then within a few months ETI
one-upped it several
Times over by starting an 8080 design (at least I
think it was 8080,
Certainly it was 8-bits). Some time later PE came
out with the UK101.
I'm pretty sure I have all the PE articles for both
of those around
Somewhere and possibly the ETI ones (I used to buy
PE every month from
About 1978 to the late 1980s; ETI I just bought when
it looked worth
it).
Antonio
6778
days inactive
6783
days old
4 comments
5 participants
participants (5)
-
arcarlini＠iee.org -
ard＠p850ug1.demon.co.uk -
Billy.Pettit＠wdc.com -
david_comley＠yahoo.com -
dbwood＠kc.rr.com