[GreenKeys] Friden flexowriters

[Teletypeparts]

Every Flexowriter I ever encountered was EIA or machine code as its sometimes called.  It usually had an odd number of punched holes for each character.  

I have no experience working on them.  Finding one usually meant they did not need a 33 TTY.

I worked on Jones & Lamson Tape Editor's which had an 8 or 16K computer in the pedestal.  You could input EIA and get ASCII out or the other way around.  Worked on them at J & L  in Springfield, Vermont and a few other places.  J & L included them on some of their TNC controlled machines and also used them in their own factory on the manufacturing floor and in the programming dept.  

73's

Wayne




-----Original Message-----
From: John Nagle <nagle at animats.com>
To: greenkeys <greenkeys at mailman.qth.net>
Sent: Tue, Apr 19, 2011 12:52 pm
Subject: [GreenKeys] Friden flexowriters


> From: Richard<legalize at xmission.com>
 Subject: [GreenKeys] Frieden flexowriters

 Does anyone here have experience in interfacing these to modern
 equipment?

 Here are some photos of the older model I have for reference:
 <https://picasaweb.google.com/legalize.slc/TheBlackHole#5537975707460611346>
 <https://picasaweb.google.com/legalize.slc/TheBlackHole#5538031078137530402>
 <https://picasaweb.google.com/legalize.slc/TheBlackHole#5538031085825013394>

 Here is a representative picture of the newer model I have:
 <http://www.computerhistory.org/collections/accession/102692719>
     There's interfacing info at
	http://www.nixiebunny.com/flexo
including cable pinout and timing diagram.  Older models
sed 6-channel tape, but later models went to 8-channel
ape.  However, the 8-channel devices are not ASCII.
     Some reader and punch variations will read "edge cards",
unch cards with paper tape code punched into one edge. The
icture from the Computer Museum shows such a machine.
     These are parallel devices; the interface is
 or 8 bit parallel, with a clock pulse.
     Some of the later models have a plugboard, and some
rogrammability.  There are many Flexowriter peripherals,
or adding date, time, addresses, data from external
ources, etc.  Is that device next to yours a scale?
     Many early computers used Flexowriters for input and
utput.
     Somebody is selling Flexowriter schematics on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270710592525+&item=270710592525
ttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270737879210
					John Nagle
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