Editor Instruction Set
Entrex 600 Series
Courtesy Ralph Atenasio

"We made it speak the operator's language."


Downloaded from:


Title:    Data Entry System

Publisher:    Entrex, 1974
We only know this exists because it's vague listing on here

Does anyone have any idea how we could ever find a copy?


A Programmer's Tale (1966-2001)
Ralph Atenasio
Partially displayed on here
(with pages missing throughout up to page 121, and then completely cut off after 122.) 

In Chapter 1 of his book, "Returning to the Real World", I see this text in only the 1st & 2nd sentence of the first paragraph:

"February 1965...I had just finished four years in the Air force, the last two and a half spent in Berlin Germany."

Since the purpose of the website, as found on its home page at , linked by the page where I find this lower picture, says:

"The Berlin Island Association is comprised of former members of the United States Air Force Intelligence unit and related operations in Berlin, Germany."

By context, it could very well be that this is indeed the same Ralph Atenasio.

I've emailed the caretaker email address for this site, but it was returned undeliverable.
Can anyone find Ralph?
Courtesy of Ralph Atenasio (62-65)

Find this Data/Terminal User's Guide - Entrex 600 Series:,11084

Author: González G., Florentino R.
Date: 1982
From if original URL doesn't work...





Part I by the General Engineer of the Armament BOUCHER Henri TABLE
(Translated to English)

Translated from French to English (on page 29):

In 1974, Nixdorf approached America in two ways:
on the one hand, it buys the license of the American product Entrex 480, which it will produce in
Paderborn and will market in Europe in its 8850 products; on the other hand, it makes
to realize in the USA, by the company Nitron, a microprocessor NCF1 which it will use in
its American models 8830 and 8862. With the 900 and microprocessors that
begin to appear, Nixdorf has four solutions and will activate them every
four, which may explain some of the later difficulties.
Operation 620 costs Nixdorf $ 1.8 million in license plus royalties on
every machine that uses CPU, not to mention production investments.
The Entrex will first be announced under its American label, in three versions 480,
380 for 22 positions, and 280 for 12 positions, while the production is being prepared.
Then the 620 is announced in 1978 as a product, in two versions 25 and 45. The
25 is a basic standalone, with a screen of 1920 characters, a cartridge of
2.5 MB and a floppy disk; the 45 adds up to 4 dispacks of 66 MB. But these
OEM announcements only last for a moment, and the 620 fades behind the
8850 in 1980


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