First progress report on a multi-channel magnetic drum inner ...

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<strong>First</strong> Progress Report on a Multi-Channel Magnetic Drum Inner Memory for use in Electronic Digital Computing Instruments by J. H. Bigelow P. Panagos M. Rubinoff W. H. 'Ware Institute for Advanced S^udy Electronic Computer Project Princeton, New Jersey 1 July 1948
Page 1: FIRST PROGRESS REPORT ON A MULTI- C
Page 7: IIX The experimental techniques, co
Page 13: I. Introduction . I-l 1) Since 1946
Page 17: 1-3 curtailed basis. Accordingly co
Page 21: II. Shaping the Problem. Il^l: 1) I
Page 25: II-3 4) Up to this point the motion
Page 29: II-5 distribution of search frequen
Page 33: III • Electrical Qualifications o
Page 37: III-3 commonly is assembled from tw
Page 43: at es , rates, disturbances, III-4
Page 47: a) Be capable of operation from, an
Page 51: IV„ The Single -Filament Head IV-
Page 55:
lT-3 these are essentially the usef
Page 59:
IV-5 of -the magnetic medium, the r
Page 63:
V-2 is useful to consider the densi
Page 67:
VI-1 VI. Sxpe rimgntal Investigatio
Page 71:
Tjcr
Page 77:
eliability. VI-4 Pulses were record
Page 81:
VI- the 3 mil head 30 amperes is re
Page 85:
Magne tic material TABL3 Vll
Page 89:
Photograph 1 - A Single Wire Head P
Page 93:
VI-9 vfe are constructing will be p
Page 97:
X K 111 A t •i||-^VWV>>-t— 1 1
Page 101:
it VlI-3 pulse is thus determined b
Page 105:
VlI-5 difficulties were encountered
Page 109:
VIII-2 namely heads are operating a
Page 113:
VIII-3 schemes is to use a standard
Page 117:
VIII-5 yet every possibility of red
Page 121:
IX. Design of the 44 Cy^annel Drum
Page 125:
"4 "•J
Page 129:
IX-3 contact each other only along
Page 133:
9.2 Design of the Multiple Head Uni
Page 139:
a fine, one mil magnetizing wire th
Page 145:
IX-8 So far nothing has been said a
Page 151:
IX-10 forms one of the two contact
Page 155:
IX-12 1. It prevents the cable from
Page 159:
IX-14 ribbon consisting of a sturdy
Page 163:
X. Limitations of the T'schnigue an
Page 167:
X-3 As higher operating rates are s
Page 171:
X-5 Number of heads required: 180 j
Page 175:
A-2 Using this formula (i.So, assum
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