[LINK] Looking for some advice from the link 'brain'

[Antony Barry]

On 02/04/2007, at 5:47 PM, Adrian Chadd wrote:

> It gets worse if you're wanting to read some of the really old  
> stuff (for values
> of old greater than my age but less than, say, 100, as early  
> storage media
> were analog/mechanical and easier to build readers for) - say, the  
> data tapes
> storing recorded telemetry and data from one of the early NASA  
> space probes.
> I think it was Pioneer. If I remember right:

Around the same time that microfilm and microfiche were developed for  
archival storage of voluminous material like newspapers in libraries  
there were also microcards. These were positive prints rather than  
negative transparencies. In the technology race they lost out. The  
readers stopped being made. The old ones eventually broke. The cards  
are still sitting in libraries. I guess you could still reads the  
cards using a low powered microscope but it wouldn't be fun!

Tony

phone : 02 6241 7659 | mailto:me at Tony-Barry.emu.id.au
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