HP 1801A PDF

Various plug-in units were available for vertical and horizontal deflections. Before the HP A, the Tektronix series were the best, even if they were heavy and needed their own trolleys. This A needed a really good clean-up to remove all the labels, years of dust and some switch cleaner. The top carrying handle is missing and the 4 feet on the rear panel are missing. At some point, a fixed mains cable had been fitted instead of the American 3 pin plug recessed in the rear panel. The front panel cover had done its job to protect the Oscilloscope.

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Accessories: original fitted presentation, user manual German , pen with combined stylus. Launched in , the The HP HP for Hewlett Packard , code-named "Cricket", was a technological wonder of electronic miniaturization and the first wristwatch to incorpore a calculator. The model, concentrated in a 41 x 37 mm horizontal rectangular case, not only a watch, but a real wrist instrument with its more than three dozen functions to manipulate and interrelate time, calendar and numeric data.

Hp succeed in presenting at the time a real time computer, in a normal size wristwatch. The HP was not a very successful product. Today, the HP is one of the most sought after collectibles in the antique electronics market, because it was a big step in watchmaking history. The production stopped around The large and thick, 15 mm. Not really water-resistant, the watch was able to resist to a 10 meters immersion during 5 minutes max.

The keys to operate the time, date, alarm, chronograph and calculator functions and key panel are stamped from aluminum and hard anodized so that they can resist scratching and wear. The articuled stainless steel bracelet has an approx. This LED digital wristwatch, antimagnetic to 60 Gauss, is set with 28 tiny keys that the user operated with a stylus built into the bracelet.

The red LED display panel shows the functions, thanks to light emitting diodes, activated by pressing the function buttons. The quartz movement is powered by three batteries, two for the display and one for the IC. The movement contains six large-scale integrated circuits which were the equivalent of 38, transistors. The watch accuracy was set to only 30 secondes a year.

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