B chapter.indd - Charles Babbage Institute - University of Minnesota

190
Erwin Tomash Library
Brainerd, John Grist Bramer, Benjamin
engineer on the project. After the ENIAC team broke up
in 1945, he remained on staff as chief engineer for the
EDVAC project. He left in 1947 to become one of the
founding partners of Technitrol Engineering Company
which, among other things, manufactured components
for many of the first-generation computer projects.
While considerable portions of the paper are taken up
with a discussion of basic concepts such as electronic
versus mechanical, this paper does provide some items
that are otherwise difficult to find. Diagrams are given
for the exact layout of the ENIAC and for the front
control panels of the accumulators.
Illustrations available:
Layout of ENIAC
Accumulator control panel
Accumulator front panel
Accumulator, B 225
B 226
Bramer, Benjamin (ca.1588–1650)
B 226
Apolonius Cattus, oder, Kern der gantzen Geometriæ in
drei Theil. In dessen ersten Theil Euclidis Geometrische
demonstrationes erhoben, und zu ihrem Objecto
perfectionis angefüret werden… Apolonius Catti,
oder, Kerns der gantzen Geometriæ in ander Theil.
De sectione cylindri … Dritter Theil oder Anhang
eines Berichts von M. Johsten Burgi. Geometrischen
triangular Instrument, zu gar leicht kurtzen, und doch
gewissen Land und Feldmessen. Wie auch andere
höhen, tieffen, längen und breiten zuermessen dienlich
b/w: Kohlhans, Johann Christoph; Neu-erfundene
Mathematische und Optische Cüriositaten,
bestehend So wohl in einem sattsamen Unterricht,
zum Feldmessen und itzt üblichen Fortification.
Year: 1684
Place: Kassel
Publisher: Ingebrands
Edition: 2nd
Language: German
Figures: engraved portrait (Burgi) frontispiece; title in red and
black; 51 copper plates (23 double page, 26 single page,
2 folding)
Binding: contemporary vellum
Pagination: pp. [14], 102, [2], 61, [1], [8], 22, [2]
Collation: ):( 3 ):():( 4 A–N 4 A–G 4 H 3 A–D 4
Size: 196x133 mm
Reference: Pogg Vol. I, p. 274
After the death of his father in 1591, Benjamin Bramer
was taken care of by his sister, who was married to the