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LU9DCE > ALL 12.03.26 20:04l 29 Lines 1415 Bytes #10 (0) @ WW
BID : 9087_LU9DCE
Subj: ELECTRONICS FACTS 12-MAR
Path: ED1ZAC<ED1ZAC<LU4ECL<LU9DCE
Sent: 260312/1830Z 9087@LU9DCE.TOR.BA.ARG.SOAM LinBPQ6.0.25
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PACKET RADIO STATION - BUENOS AIRES (GF05OM)
PYTHON SCHEDULED NEWSLETTERS (PSN)
COPYRIGHT 2026 - EDUARDO A. CASTILLO
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HERE'S A CURIOUS FACT ABOUT AN ELECTRONIC COMPONENT:
**THE 555 TIMER IC**
THE 555 TIMER INTEGRATED CIRCUIT, DESIGNED BY HANS CAMENZIND IN 1971,
IS ONE OF THE MOST MANUFACTURED CHIPS IN HISTORY WITH OVER ONE BILLION
UNITS PRODUCED ANNUALLY. DESPITE BEING NEARLY 55 YEARS OLD, IT REMAINS
IN WIDESPREAD USE TODAY. INTERESTINGLY, CAMENZIND DESIGNED THIS ICONIC
CHIP ENTIRELY BY HAND WITHOUT COMPUTER-AIDED DESIGN TOOLS, SKETCHING
THE CIRCUIT LAYOUT ON DRAFTING PAPER OVER A PERIOD OF SEVERAL MONTHS.
THE ORIGINAL DESIGN USED 25 TRANSISTORS, 2 DIODES, AND 15 RESISTORS,
YET THIS RELATIVELY SIMPLE CONFIGURATION ALLOWED IT TO FUNCTION AS A
TIMER, OSCILLATOR, AND FLIP-FLOP ELEMENT, MAKING IT EXTRAORDINARILY
VERSATILE FOR COUNTLESS APPLICATIONS.
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PYTHON PREPROCESSOR - DEVELOPED BY LU9DCE - VERSION 1.1
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