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--- summap20 [2017/05/14 14:58]
clodoveu
+++ summap20 [2017/05/14 18:27] (current)
clodoveu
@@ Line 22: / Line 22: @@
 {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/SummaPrima20/20170514_Summa_Prima_20_left_side_1.jpg?500 | Left side view after restoration}}
-Left side, notice the restored purple bottom and the overall aspect of the machine, as compared to the smaller picture, showing the right side as purchased.
+Left side, notice the restored purple bottom and the overall aspect of the machine, as compared to the other picture, showing the right side as purchased.
 {{http://www.dcc.ufmg.br/~clodoveu/files/Images/SummaPrima20/20170514_Summa_Prima_20_left_side_2.jpg?350 | Left side view after restoration }}
@@ Line 50: / Line 50: @@
 **More on this machine**
+[[http://www.aconit.org/histoire/calcul_mecanique/documents/Olivetti_Summa_Quanta_20.pdf | An explanation of the design of the Summa Quanta 20, an electrical machine similar to the Summa Prima 20, a successor to the Summa 15. The calculating principle is the same]]
 [[http://www.dcc.ufmg.br/~clodoveu/files/Images/SummaPrima20/Olivetti Summa Prima 20 Quick Reference Guide (Spanish).pdf|Olivetti Summa Prima 20 quick reference guide, in Spanish]]

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summap20.1494784697.txt.gz · Last modified: 2017/05/14 14:58 by clodoveu

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