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Texas TI-59: A tale in pictures
03-27-2021, 09:49 AM
Post: #23
RE: Texas TI-59: A tale in pictures
(11-15-2014 09:41 PM)jebem Wrote:  EDIT: Video showing the reading operation.



Just to note and capture a comment on that video:
Quote:George Carlson
10 months ago
The card used 4 tracks per side, four a total of 8 tracks. It recorded 2 bits at a time. Two of the tracks were for one bit, the other two tracks were for the second bit. For each bit there was a one's track and a zero's track. A flux reversal in the one's track indicated a one, a flux reversal in the zero's indicated it was a zero. In this way the data was self clocking and the card could be read at almost any speed. I was the guy who designed the machine TI used to write their pre-programmed cards. But that was a very long time ago.
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Messages In This Thread
Texas TI-59: A tale in pictures - jebem - 11-11-2014, 10:06 PM
RE: Texas TI-59: A tale in pictures - Gene - 11-13-2014, 08:22 PM
RE: Texas TI-59: A tale in pictures - EdS2 - 03-27-2021 09:49 AM



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