Voyager series calculators, which include the HP-10C, HP-11C, HP-12C, HP-15C, and HP-16C have two separate test functions, the internal/display self-test, and a keyboard test.To perform the internal/display self-test, with the calculator off, press and hold the multiply key, press and release the ON key, then release the multiply key. The calculator will flash "running" in the display for twenty-five seconds while the internal test is performed. The test ends with all segments and annunciators in the display turned on. (The internal self-test can be performed continuiously by pressing the ON and plus keys simultaneously. Pressing any key will end the test at the end of the current twenty-five second cycle.)To perform the keyboard test, with the calculator off, press and hold the divide key,press and release the ON key, then release the divide key. Then, in order press each key from left to right on each row, from the top row to the bottom row. Press the ENTER key in order for both the third and fourth row. Different segments in the display will be turned on as each test key is pressed. If all keys are pressed in the proper order and are all working correctly, the model number of the calculator will be displayed. If a key is pressed out of order, or there is a problem with the keyboard, "Error 9" will be displayed.
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Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection
Since 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.
Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.
Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.
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