[Table of Contents]
People old and young
enjoy waxing nostalgic about and learning some of the history of early electronics. Electronics World was published
from May 1959 through December 1971.
As time permits, I will be glad to scan articles for you. All copyrights (if any) are hereby
wasn't until February 1 1972, that Hewlett-Packard introduced the
electronic calculator. Before that, when you spoke of an electronics
calculator it referred to a computer (likely a vacuum tube type), a
human who specialized in electronics calculations, or this special slide
rule sold by Cleveland Electronics Institute - the 515-T. It had special
scales for calculating reactance, and resonance, and had common circuit
analysis formulas printed on the back side.
Here is an RF Cafe
web page dedicated to engineering
and my small collection that includes a 515T. I will
gladly accept a donation and credit you accordingly.
Start Using This Remarkable Electronics
the man who's always first to say: "I've got the answer right here!"
Some day everyone in electronics may have a slide rule like
this. Till then, the man who uses one will seem like a wizard as he
solves reactance and resonance problems in 12 to 20 seconds - without
pencil and paper.
This is a professional slide rule in every
detail, a full 10" long, made exclusively for Cleveland Institute of
Electronics, to our rigid specifications, by Pickett, Inc. It can be
used for conventional computation as well as special electronics calculations.
All-metal construction assures smooth operation regardless of climate.
Handsome top-grain leather carrying case has heavy-duty plastic
liner to protect slide rule; removable belt loop for convenient carrying.
"Quick-flip" cover makes it easy to get rule in and out of case.
You also get four full-length AUTO-PROGRAMMED™ Lessons, which
teach you how to use the special electronics scales on the slide rule.
These lessons have been carefully designed to meet the same high educational
standards as the electronics career courses for which our school is
famous. Even if you've never used a slide rule before, you'll soon whiz
through the toughest problems with this CIE rule.
underpriced. Many men in electronics have told us that this unique slide
rule, leather case, and 4-lesson course easily add up to a $50 value.
But we have deliberately underpriced it at less than $25. Why? Our reason
is simple: we are looking for men in electronics who are ambitious to
improve their skills ... who know that this will require more training.
If we can attract you with the low price of our slide rule and course-and
impress you with its quality - you are more likely to consider CIE when
you decide you could use more electronics training.
for free booklet. See for yourself why this amazing slide rule and course
have made such a big hit with busy electronics men everywhere. No obligation,
of course - just an opportunity to get in on the best offer ever made
to people in electronics. Just mail coupon, or write Cleveland Institute
of Electronics, Dept. EW-142, 1776 East 17th St., Cleveland, Ohio 44114.
Cleveland Electronics Institute's "Electronics Slide Rule"
Here is the original scan
Posted May 6, 2013