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<se *< *pl 297,20,243,10,10*  *lw 170*


*pn 0,0*
 *ld8* *ps0*
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*sj*
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*ld8*
Professor Peter Lykos
Illinois Institute of technology
Chicago
Illinois 60616
USA

       Dear Peter,
*qr*
1979-05-09
*ld16*
*nl1*
*np6*
*rj*
Enclosed an abstract for the symposium on Chemistry and Computers.
Sorry for being late with the abstract, but your deadline was
really very tight. I hope that my abstract will be considered
anyway.
*nl**np6*
Could you arrange that I get some more information about the
meeting?
*nl*
*lm30**nl3*
Regards*nl2*
Anders Lindgård*nl*
H. C. Ørsted Institutet*nl*
Universitetsparken 5*nl*
DK-2100 København Ø*nl*
Denmark
*nl6**lm60*
*nl3*
*lm0*
*pl 211,0,211,0,0*
*ld8*
*lw 141*
*ps0*
*rj*
*nl2*
*ct*
A MULTIMICROCOMPUTER SYSTEM FOR CHEMISTRY
A. Lindgård  

H. C. Ørsted Institutet
Københavns Universitet
Universitetsparken 5
DK-2100 København Ø
Denmark
*rj*
*ld8**ns 1,8,Abstract. *
               ---------*nl**ld8**np*
A multicomputer system with a mediumsize computer as a front end
has been designed. In the system a large number of microcomputers
in a close-coupled configuration is assigned to be used as con-
trollers for peripheral equipment, controllers for local process-
control computers and for long term computations in statistical
mechanics. The computers communicates and executes control using
messages and blocktransfers. Control functions 
e. g. reset, start and stop are not as usual performed by
hardware, but are executed by a
short monitorprogram in a read-only store in each
computer and initiated by messages. Messages and answers are handled by reference as each
central processor may read (but not write) in the store of
any other microcomputer. The microcomputers are 24bit mashines
each having as a minimum of 8 k words of read only store and
16 k words of random access store. The primary programming
languages both for systems programming and applications will be
PASCAL and ALGOL.
 The basic idea in the system is to let any single com-
puter handle a welldefined long term task and this is expected
to keep the intercommunication at a low level.*nl1*
To this system there is attached two 
hierarchical starnetworks of computers for control of individual
experiments in physics and chemistry.
One network is based on the 24bit computers and one based on Motorola
M6800 computers.
 The applications include
voltametry, spectrometers, oscillatory chemical reactions,
beam foil spectroscopy, laser raman spectroscopy etc.
*ef*
▶EOF◀