[GreenKeys] More on Model 29, et al

[E.]

Ah, Lawrence, Kansas is right over the boarder from me ;o … to bad the wife would most likely say no ~o~; ~…..

(Lincoln, Nebraska)


> On Feb 14, 2018, at 12:52 pm, Sam Stinson <samstinson at gmail.com> wrote:
> 
> 
>> And remember, they never even heard of a computer!
> 
> Well, not entirely true. Digital computers came about later, but there were analog computers in the late 1800s and early 1900s, including artillery fire control computers as well as various machines for solving mathematical problems such as tide predictions. Thompson’s differential analyzer was described in the 1870s, but not built until the late 1920’s - though the concepts were used for various other machines prior to that. I find it likely as mechanical devices of scientific interest, the teletype engineers would have known of them at least. 
> 
> And almost certainly the slide rule - a pocket computer - was in heavy use.
> 
> 
> On Feb 14, 2018, at 10:27, Roy Morgan <k1lky68 at gmail.com> wrote:
> 
>> 
>> 
>> On Wed, Feb 14, 2018 at 12:04 PM, Ralph Irish <w8roi at wowway.com> wrote:
>> With respect to the friend in Detroit, (1969 and later), his name was (Neil) Doug Frede.
>>  
>> After noting the link kindly supplied by Nick,
>>  
>>     http://www.navy-radio.com/manuals/tty/jh/ttyman4/AnalysisCharts/LP800-AC.pdf
>>  
>> I noted references to 'tabbing' both horizontal and vertical, and other typing 'motion'
>> situations.
>>  
>> At one point, Doug put together a 28 Printer that had both online  REVERSE PRINT  and
>> online REVERSE LINE FEED.  These were accomplished with Stunt Box sequences.  It
>> was most amazing to see this machine in operation, doing these 'stunts'.   
>> 
>> 
>> Ralph,
>> 
>> It seems that Doug was in the league of the folks who designed these machines in the first place!
>> 
>> As I try to follow the mechanical magic of teletypes, especially the Model 15, I am amazed at how they do what they do.  So hats off to the REAL mechanical engineers that did all that.  
>> 
>> And remember, they never even heard of a computer!
>> 
>> -- 
>> Regards,
>> Roy
>> 
>> Roy Morgan
>> k1lky since 1958
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