[GreenKeys] NBS TN-419 Accessory Equipment and Teletypewriter Modifications for Remote Computer Consoles

[Ken Wiebe]

Interesting! I wonder how popular any of those mods were...

On Sun, Mar 8, 2020, at 06:43, Paul Birkel wrote:
> I noticed the cover page of this in a current eBay listing. Kinda interesting.

> 

> http://nvlpubs.nist.gov/nistpubs/Legacy/TN/nbstechnicalnote419.pdf

> 

> February 1968

> 

> “Equipment auxiliary to, and simple modifications of a teletypewriter are described

> which enable it to be used more efficiently as a remote console of a computer. The

> descriptions and drawings are sufficiently detailed to enable one to duplicate the

> modifications or construct the auxiliary equipment with little or no design effort.

> 

> Among the items treated are: pushbutton word generators, providing automatic

> typing of often used programming instructions; and option switches for full or half-

> duplex operation, for inserting the sixth bit for lower case letters, and the eighth bit

> for parity compatibility.”

> 

> CONTENTS

> 1. Introduction

> 2. Description of Modifications

> 2.1 Column Index

> 2.2 Tape Editing Switches

> 2.3 Transmit Mode Switch

> 2.4 Code Modifying Switches

> 3. Description of Accessory Equipment

> 3.1 Word Generator

> 3.2 Consecutive Number Generator

> 3.3 Single Character Generator

> 3.4 Remote Tape Reader

> 

> “By way of illustration, the auxiliary equipment was connected to and the

> modifications were made on a Model 33 ASR Teletype (Teletype Corp. 5555 Touhy Ave.,

> Skokie, 111. 60078), which is one type of teletypewriter. In the drawings when a

> numbered lead or connector is referred to, the number corresponds to a component in the

> Model 33 Teletype. While this equipment was connected to a Teletype, it will be

> understood that only small changes would be necessary to use this equipment with other

> teletypewriters or data recorders. Inclusion in this report of specific parts or

> equipment in no way represents approval or disapproval of any manufacturer or product by

> the National Bureau of Standards.”

> 

> -----

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