morphed to TTL part number history, was: IBM PLAYING CARDS

[Allison]

>
>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