This power-type wire wound axial-lead Blue Jacket is hardly larger than ~ match head but it performs like a giant! It's a rugged vitreous~enamel c9ated.
job-. .·.··SPRAGUE;WATTAGE DIMENSIONS
and like the entire BI.ue Jacket family, ;>TYPENO~ RATING ;L(lnch •• )D MAXIMUM RESISTANCE it is built to withstand severest
humi.d-it}' performance requirements. 151E 3 1?i2
Blue Jackets are ideal for dip-sol- 27E 5 . 1 } l . dered sub-assemblies ... for
point-to-. 28E 10 'H.
point wiring ... for terminal board .... h _ ' ; ... C. w • • • • •
mounting and processed wiring boards. They're low' in cost, eliminate extra hardware, save time and labor in mounting!
Axial-lead Blue Jack~ts in 3, 5 and 10 watt ratings are available without delay in any quantity you require.
'* *
~6·· 30~OOC) 11
~6': tSo,090l!
." ... " •.. 1 .... , ....•. ; ... ·, ... ;, ..•.. ,;,.,.,':;
Standard Resistance Tolerance: ±5%
WRITE FOR ENGINEERING BULLETIN NO. 111 B
®
SPRAGUE ELECTRIC COMPANY 97 MARSHALL ST. NOR TH A D AM 5 , MAS
s.
21
-Forum
ALL-TRANSISTOR COMPUTER Neil Macdonald
New York
On October 7 in Poughkeepsie, N. Y., In-ternational Business Machines Corporation ex-hibi ted to the press their new experime n t al electronic computer using transistors.
The transistor computer is about one half the size and requires only a twentieth of the power of a simila r vacuum tube compu t e r.
The new computer is comparable in capacity to the IBM Type 604 electronic computer (of which
over 2000 are now in use). The speed of the new machine is comparable to the speed of the Type 604. The experimental engineering model is believed by IBM to be the first fully oper-ating transistorized computer having automatic input and output. It contains over 2200 tran-sistors, many of them of a design develo pe d by the IBM engineers to meet certain operatlig characteristics required in computer circuits.
A transistor's longer life than a vacuum tube is another expected saving.
Printed circuits express a great deal of the wiring of the transistorized computer,and it contains 595 printed wiring panels. Man y of them show in the accompanying photographs.
*.---*---*
Figure 1. IBM's new experimental transistorized computer is composed of a high-speed punching unit, left, and the transistorized calculating unit at right. The calculating unit is uncovered
to show the bank of printed wiring panels on which the transistors are mounted.
28
-Figure 2. This bank of printed wiri ng panels in IBM's experimental "all-transis-tor" computer replaces much of thewiring required for the computing circuits of conventional computers. Mounted on t~
panels are many of the more than 2,2 00 transistors used in'the machine.
FORUM
29
-Figure 3. These printed wIrIng panels, used in IBM's experimental transistor computer to s impl ify produc ti on and maintenance, also reduce space ~quired.
Devices mounted on the panel held in the hand incl ude trans istors (at the extreme left), diodes, and resistors. The model contains 595 of these panels.
Konrad Zuse, Germany
POSTER OF ORGANIZATIONS (continued from page 19)
Kreis Htinfeld No. 69, Neukirche n,
COMPUTERS IN GREAT BRITAIN (continued f~om page 8)
we have been privileged to lead the way.
Electronic digital computers. Has Model IV and V computers. Ss(90)
Dc RMSa
made Zuse
Se (1949) Speaking personally for a moment, I have been impressed by the warmth of the personal friendships on both sides of the Atlantic,and across the Atlantic, that have grown up within this computing fraternity. The only regr e t that can be expressed is that the Atlantic is so wide.
END
-*---*---*
AUTOMATIC COMPUTING MACHINERY (continued from page 25)
Vending machines, which will accept different coins, make change, give out coffee, soft drinks, sandwiches, candy, stockings, and a host of other articles, or else allow somebody to play a game for a certain num-ber of plays, etc.
END
0 0
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Page 1
Form 3526 Rev. 3-60
Read the instructions on page 2 of this form.
STATEMENT REQUIRED BY THE ACT OF AUGUST 24, 1912, AS AMENDED BY THE ACTS OF MARCH 3, 1933, AND JULY 2,1946 (Title 39, United States Code, Section 233) SHOWING THE OWNERSHIP, MANAGEMENT, AND CIRCULATION OF
• _______________________________ g_9.I!l~~~~~ ___ ~ __ ~~1i_~~~_9JJ. ___________________________________ published ____
~QP-.~hly---(Insert eXNt~.\}t va~~~
N. y,
(Staj exact frequency of issue)at _______________ , ______________ • ________________________________________________________________________ for ___________
O_C_I ______ . ___ 1.95.4 __ ,
19 _____ _ (Name of post office and State where publication has second-class entry)1. The names and addresses of the publisher, editor, managing· editor, and business managers are:
Name Address
Publisher __ ~W]._g. ___ g_, __ ~_~_~!!:.~J_~Y_ __ @_4 __ A§_~_Q_(t~_~_'\i_~_~____________ _ ____ . __ . .3.Q_l'{~~_t __ U, __ S_t .... _lJ_er!.. __ Yo.rk_ll .. -N • Y.
Editor __ •• _ .• _________ ~ __ ~_~ ___ ~_! ___ ~_~.!"~~_~_~ __________________ .__________ _ _________ .3_~_.!~!:l_~ __ ~~ __ ~_~!_.
__
J.!~_.IQ~_~_JJ..,--N • Y.Managing editor __ ~---.-.---.-~-?~.~---______________ _
Business manager ______________ ~ _____ nQlle _________________________ . _____________ .
2. The owner is: (If owned by a corporation, its name and address must be stated and also immediately thereunder the names and addresses of stockholders owning or holding 1 percent or more of total amount of stock. If not owned by a corporation, the names and addresses of the individual owners must be given. If owned by a partnership or other unincorpo-rated firm, its name and address, as well as that of each individual member, must be given.)
Name Address
_. ____ ._ .. _~~ __ Q~ __ !!~!:~~J:~. ___ ._. ___ .. _._ .. _. __ . _________ .__ _ _______ ._3p __ !!~§] __ 11_Jtt;_~~ __ Nm! __ X'Qr& __ .l.l~.-N.aY ....
---3. The known bondholders, mortgagees, and other security holders owning or holding 1 percent or more of total amount of bonds, mortgages, or other securities are: (If there are none, so state.)
Name Address
__ . _________ .. __ " .. none. __ ._. ___ . __________ .. _____ . _________ .... ___ . ______ ._._
4. Paragraphs 2 and 3 include, in eases where the stockholder or security holder appears upon the books of the company as trustee or in any other fiduciary relation, the name of the person or corporation for whom such trustee is acting; also the statements in the two paragraphs show the affiant's full knowledge and belief as to the circumstances and conditions under which stockholders and security holders who do not appear upon the books of the company as trustees, h~ld stock and secu-rities in a capacity' other than that of a bona fide owner.
5. The average number of copies of each issue of this publication sold or distributed, through the mails or otherwise, to paid subscribers during the 12 months preceding the date shown above was: (This information is required from daily, weekly; semiweekly, and triweekly newspapers only.) ___ •• _~ _________________________ _
~~C_~' --- ---(ShrnBture of editor, publisher. bUlln.s. manager, owner)
Sworn to and subscribed before me this ---'-~~ ____ •• _. __ ~day of • ______ ~_~.P~_~R_~_~ ___ . _________ . ___ ., 19 __ ~
[SEAL] _____ . ________ l_~Ang._g.Q}t~JL _____ ... ___ .. ____ ... , ____ . ___ ~ _____________ _ Notary Fubl1o,Stateof" New York, No. 24-57~9800
(My commission expires •••• _MAI'~tL~Q ___ •• ____ • 19~_.)