morphed to TTL part number history, was: IBM PLAYING CARDS - test-drb@ccmp.vtda.org

20 Dec 2005

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Subject: Re: morphed to TTL part number history, was: IBM PLAYING   CARDS
   From: "Chuck Guzis" <cclist at sydex.com>
   Date: Mon, 19 Dec 2005 17:56:55 -0800
     To: cctalk at classiccmp.org

On 12/20/2005 at 12:10 AM ard at p850ug1.demon.co.uk wrote:

 I recently bought a second-hand Philips
'upright' reel-to-reel tape 
recorder, and found a schematic glued to the inside of the case. At one 
time this was quite common on consumer electronic devices I believe. 
Not at all uncommon on radios and TVs using vacuum tubes (valves).  Very
useful.  But then early PC's sometimes included schematics in their
end-user documentation. 
Two I know of at least, IBM XT and the Tandy HX1000.  Very nice docs at that.

Allison