October 18, 1965 Electronics
[Table of Contents]
Wax nostalgic about and learn from the history of early electronics.
See articles from Electronics,
published 1930 - 1988. All copyrights hereby acknowledged.
Are you old enough to remember when in order to make a measurement on a circuit board it was necessary to physically connect an oscilloscope probe to a trace or component lead? "Wait," you say, "What are you talking about? You still do have to physically connect a probe." Right you are, but 50 years from now your progeny will be asking that question, just as today I ask you do you remember when in order to get a "screen shot" of an o−scope or spectrum analyzer display it was necessary to connect a camera to the front of the CRT? Some instruments had an(a) output port(s) for driving a pen plotter, but getting a plotter set up and calibrated was often more work and frustration than hanging a camera on the front. Most of the cameras used Polaroid film packs to enable "instant" pictures. Getting a good image usually took a couple tries. Scope cameras were still in common use when I entered the electronics world in the 1970s. It really wasn't until the later 1980s or early 1990s that printers could be hooked up to newer test instruments with a GPIB or parallel output port.
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Posted November 1, 2018