morphed to TTL part number history, was: IBM PLAYING
ard at p850ug1.demon.co.uk
Tue Dec 20 12:40:31 CST 2005
> 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
Actuallym this tape recorder uses (germanium) transistors. I'm still
looking for the mains-powered valved version (EL3514). But yes, certainly
a lot of valve radios, etc, had a schematic inside
> useful. But then early PC's sometimes included schematics in their
> end-user documentation.
Yes, and most of them were very close to the schematics in the IBM
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