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Title
The role of digital components in photogrammetric instrumentations

13
only in^internal ROM and RAM programs. The number of different parts
is reduced even though the functions performed may be drastically dif
ferent. This is economically advantageous, even if in some cases some
processing capacity is wasted. Furthermore, part replacement problems
are reduced, there are fewer interconnections (which enhances reliability)
and desirable system alterations can be introduced by simple programming
firmware changes.
CONCLUDING REMARKS
The infiltration of digital techniques into measuring instruments
and even into consumer products continues unabated. The driving force
behind its power of penetration is economy, achieved by taming extremely
high technology and subjecting it to mass production.
Photogrammetric equipment manufacturers and users have always been
highly sensitive to economical factors. Sooner or later, therefore, -
probably soqner - the photogrammetric equipment field is going to be
invaded by microelectronics and succumb to the technologies that feed
the invasion. This will entail substantial technological changes, and
photogrammetric instrument designers must take the lead in becoming
conversent in electronics. The topics discussed in this paper give an
idea of what is involved, as seen today. Tomorrow, new concepts may be
added! To meet their responsibilities, the photogrammetric instrument
designers must extend their views and work hard to keep up with the rapid
development of digital technology. Their success in doing so determines
to what extent the users can reap benefits from the advances essentially
paid for by other parts of the world economy.