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First IC you came in contact with?
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zapta:
First semiconductor: 1n34 diode (crystal radio)
First transistor: oc71 (scratch the black paint and you have a light detector)
Dave Turner:
Atferrari - As far as I recall the RTL logic ran at about 3.6v and varied from 6 to 40mA per chip but as they weren't as sophisticated as the 7400 series you tended to need more chips.

Have a look at http://www.tinaja.com/ebooks/rtlcb.pdf

As for first transistor that would be an OC71 - and valve EC91.

Dave
gibbled:
Lm3909 from radio shack in 76 or 77.  Soldered up on a fragment of veroboard, it blinked an led for what seemed like years on a aa cell.  I was not even a teenager at the time,  lol.
CatalinaWOW:
So now that the definitions are being tugged around.

First "integrated circuit" would have to be something like the 6M11 tube.  Two triodes and a pentode in the same vacuum envelope.

First transistors would be the Raytheon fellow used in a Philco  two transistor radio kit.  The start of the transistor wars. (My radio has more transistors than yours.  The tube war was basically over, with the bulk of common receivers using the same family of five tubes.)

First silicon ICs were a Fairchild 709 and some forgettable RTL logic that came in a exploration kit - had quartz crystals (both packaged and raw quartz), a thermistor, some ICs and power transistors, a couple of microswitches and some other stuff I have forgotten now.   It was sold at the university book store, and from todays perspective I can say that the logic was very similar to Apple selling in campus bookstores today.  The vendors of the various products in the kit wanted to hook young engineers on their brands early.
N2IXK:

--- Quote from: CatalinaWOW on May 16, 2015, 05:11:00 pm ---First "integrated circuit" would have to be something like the 6M11 tube.  Two triodes and a pentode in the same vacuum envelope.

--- End quote ---

The 6M11 and the other Compactrons were just multi-section tubes. Completely independent sections, with no connections between them. The 12 pin base just allowed more sections within one envelope than were possible in 8 or 9 pin tubes. 

The first real "integrated circuit" probably was one of the Loewe series of "multi-valves", which incorporated resistors and capacitors inside the vacuum envelope along with 3 active triodes to form a "radio in a bottle":

http://www.electricstuff.co.uk/loewe.html
http://www.radiomuseum.org/tubes/tube_3nf.html


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