[GreenKeys] Black tape

Duncan Brown duncanancy at earthlink.net
Thu Jun 18 16:13:48 EDT 2015


OOPS - I mis-typed it. The tape is standard width, 5-bit tape - 11/16th" 
(not 13/16th")

Duncan

On 18-Jun-15 11:28, Jim Haynes wrote:
>
> Well, now, 13/16 is more like 6-level tape, so could be one of the 
> computers that used 6-level code, or some sort of typesetting application
> that used Teletypesetter code but a much faster machine.  I'm not really
> aware of the zoo of old computers that might have used 6-level tape.
>
> On Thu, 18 Jun 2015, Duncan Brown wrote:
>
>> The AWA Museum just received a couple of boxes of 13/16" oiled tape 
>> that is BLACK.
>> I assume black tape was used with an optical reader.  What 5-bit 
>> machines used optical sensing??
>> Was Black tape used anywhere else???
>>
>> Thanks,
>>
>> Duncan
>> K2OEQ
>>
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