Serel
Computers:
Description
of the 2 french early computers Serel built with
Ge transistors and core memory (ca 1960)
The small computer ODP-505
has beeen restored.
Have a look here:
ODP-505
restoring
You will
find in this section, a full description
of the 1969-1973 production of an electronic company,
specialized in new
technologies. The described techniques correspond to
the period of changeover of
transistors to simple integrated circuits. Of course the cameras are
always
built with vacuum tubes!
It's really impressive to
see! Note the size of the
card by comparing it to that of a hand. I have made these pictures from
different angles.
Notice the color of the wires. You can
also see
some destroyed or absent cores ... and dust!
I did not clean up the memory due to the fear of damaging it.
Core
memory pictures
an
illustration
Otherwise, the pictures of core memory of the ODP-505 can be
seen
here::
.../ODP505/Memoire/Memoire.html
(this is a whole configuration memory, with its
electronic)
Note
(end
August 2008)
I am writting a new section about core memories... this will
need
several months... More than 500 pictures!
You can have a look at
http://pichotjm.free.fr/MemTores/MemTores.html
...
1969 Study
of an alphanumeric display terminal using TV delay lines
as
memory Have a look there:
http://pichotjm.free.fr/DisplayDL/DisplayDLus.html
196x
ASR33
Teletype was used with the Multi8 and
T1600
200
original photos of
screens, displays, alpha-numeric consols, monitors,
keyboards, and application screen shots. There are also 8 Soviet or
american satellites, avionics, radar displays, monoscopes, dual beam
display...
(ca 1973, 16
bit machine)
Sorry, in french.
(ca 1972, 8 bit machine)
1972:
(In french:)
In
addition to computers, there were displays, TV image
memories... I
propose you to have a look at a complete catalogue on such devices. You
can find some additional explanations on display techniques described
above.
I have prepared a short list of very old machines that have
been saved
over the world. I will update this list based on my walks on the net.
This will place a machine compared to the march of time.
[sorry text in
French, but machine names and links lead to many English URL]
List of museums
or private
sites, by country, by technologies, old or
exotic, brands, models, history and chronology ...
For some time, I
collect links to sites describing computosaurs, in France, or
in foreign countries
including some fairly exotic ... (Russia, for example, Brazil ...)
An
entire section focuses on the technologies used by computers:
It speaks about
memories using acoustic wires, mercury, TV delay line, lamps, magnetic
bubbles, ternary logic, ...
normally what you salivate ... and lose a few hours in front of your
PC!
A recommended suggestion about vacuum tubes: see the
collection of B
Loquen (fabulous!) And the
other guy that makes even his lamps! (video Claude Perrier)
- Description of a Pong
game done with a specialized IC by TI (Without the use of
a microprocessor)
here a double beam
CRT
- Golden
book
If you like
my web site, leave me a message... precise your country.
Other subjects
These last
months, i was fed up by old computers... ;-) So I prepare lot of
pictures about chinese minorities and a follow-up of the trip around
the World of my Son Renaud.
- My
photos of the Yunnan
Be carefull! You will find a lot of portraits of chinese
minorities and giant panoramics.
- A
Trip
around the World
of my son Renaud (starting may 2009, ending december 2010). Thousands
pictures (and his famous crocodile) and more than 500
hudge panoramics.
East
Europe, North Europe, Australia, Chile, Argentine, Brasil, USA,
Canada...
(Renaud is graduate in IT, and will reach USA in
march, april 2010... He will look for a job... He worked several years
as IBMer )
