calculator - 📸 Land Surveying Photos - Land Surveyors United - Global Surveying Community2024-03-29T04:52:35Zhttps://landsurveyorsunited.com/photo/feed/tag/calculatorCurta Mechanical Calculatorhttps://landsurveyorsunited.com/photo/curta-mechanical-calculator2017-09-22T20:53:29.000Z2017-09-22T20:53:29.000ZJaybirdhttps://landsurveyorsunited.com/surveyors/Jaybird<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206281154?profile=RESIZE_400x&width=400"></div><div>Curta Mechanical Calculator, a small, hand-cranked mechanical calculator introduced by Curt Herzstark in 1948. It can be used to perform addition, subtraction, multiplication, division, and (with more difficulty) square roots and other operations. considered the best portable calculators available until they were displaced by electronic calculators in the 1970s.
</div>Road BRAZILhttps://landsurveyorsunited.com/photo/737418-493847420667307-1561447680-o2014-01-28T00:29:57.000Z2014-01-28T00:29:57.000ZThiago Paimhttps://landsurveyorsunited.com/surveyors/ThiagoPaim<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206190023?profile=RESIZE_400x&width=400"></div><div>Negão friend, great surveyor. And your HP 35S</div>HP-28C and HP-28S Calculatorshttps://landsurveyorsunited.com/photo/hp-28c-and-hp-28s-calculators2012-06-03T19:58:54.000Z2012-06-03T19:58:54.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206093929?profile=RESIZE_400x&width=400"></div><div>The HP-28C and HP-28S have built in internal, display, and keyboard test functions.A continuous internal/display test is performed by simultaneously pressing the ON key and the left-arrow key (labeled "E" in the illustration at the right). Various internal and display tests will be performed until interrupted by simultaneously pressing the up-arrow key (labeled "C" in the illustration at the right) and the ON key.The more thorough internal/display/keyboard test is performed by pressing the ON key and the down-arrow key (labeled "D" in the illustration at the right). Press any key to step through the various display and internal tests until "KEYBOARD TEST" is displayed. Starting with the left keyboard, in order press each key from left to right on each row, from the top row to the bottom row. Then proceed to press each key on the right keyboard in order from left to right and top to bottom. If the test is successful, "OK" followed by the model number will be displayed. If a key is pressed out of order or there is a keyboard problem, and error message will be displayed. This test can be interupted at any time as described above.</div>Pioneer Calculatorshttps://landsurveyorsunited.com/photo/pioneer-calculators2012-06-03T19:58:53.000Z2012-06-03T19:58:53.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206093965?profile=RESIZE_180x180&width=160"></div><div>The Pioneer series calculators, which include the HP-10B, HP-14B, HP-17B, HP-17BII, HP-20S, HP-21S, HP-22S, HP-27S HP-32S, HP-32SII, and HP-42S all have built-in internal, display and keyboard test functions. The keystrokes to access the self-test functions of each calculator are the same for all pioneer models (ignoring the keyboard nomenclature for each specific model).A continuous internal/display test is performed by simultaneously pressing the ON key (labeled "C", "CLR" or "EXIT" on various models) and the key labeled "E" (the fifth key on the top row) in the illustration at the right. Various internal and display tests will be performed until interrupted by simultaneously pressing the key labeled "C" (the third key on the top row) in the illustration at the right and the ON key.The more thorough internal/display/keyboard test is performed by pressing the ON key and the key labeled "D" (the fourth key on the top row) in the illustration at the right. Press any key to step through the various display and internal tests until after the copyright notice is displayed. "KBD" on calculators with alpha-numeric display capability or "01" on calculators with only a numeric display will be displayed to indicate the start of the keyboard test. In order press each key from left to right on each row, from the top row to the bottom row. The calculator will indicate "OK" or "good" when the keyboard test is successfully completed. If a key is pressed out of order or there is a keyboard problem, and error message will be displayed. This test can be interupted at any time as described above.</div>HP-71B Calculatorhttps://landsurveyorsunited.com/photo/hp-71b-calculator2012-06-03T19:58:53.000Z2012-06-03T19:58:53.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206095261?profile=RESIZE_400x&width=400"></div><div>The HP-71B has an internal ROM self test which can be invoked by simultaneously pressing ON and the divide key ("/"). Then press 2. Finally press END LINE to start the test.</div>HP-39G Calculatorhttps://landsurveyorsunited.com/photo/hp-39g-calculator2012-06-03T19:58:51.000Z2012-06-03T19:58:51.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206094022?profile=RESIZE_400x&width=206"></div><div>WARNING: Invoking the test described below may result in the clearing of data memory, program memory, and mode settings.The HP-39G has built-in internal, display, and keyboard test functions. These functions are accessed by pressing and holding the ON key then pressing one of the keys on the top row of the keyboard, as is done on many other late model HP calculators.A continuous internal/display test is performed by simultaneously pressing the ON key and the fifth key (labeled "E" in the illustration to the right) on the top row. This test will cycle through ERAM, CPU, RAM, and display tests, then briefly display "HP 39/40 OK" before starting again. This cycling test is cancelled by simultaneously pressing the ON key and the third key (labeled "C" in the illustration to the right) on the top row.Individual tests can be performed by simultaneously pressing the ON key and the fourth key (labeled "D" in the illustration to the right) on the top row. A menu listing seven test options will be displayed. These test options are Hard, Cpu, Kbd1, Kbd2, FullRAM, RS232, and IR. Press the appropriate number for the test. This test mode can be exited either by pressing ON, or simultaneously pressing ON and the third key (labeled "C" in the illustration to the right) on the top row.1: Hard. This test displays the messages "Write to ERAM OK" and "Calculator is HP39G."2: Cpu. This is the CPU test, and displays three lines of results.3: Kbd1. This test requires you to press each key from left to right, from the top row to the bottom row. The Up-Cursor key is the right most key of the second row. The Left-Cursor, Down-Cursor, and Right-Cursor keys are the last three keys of the third row. The calculator beeps as each key is pressed. If a key is pressed out of order or bounces, a different beep is heard and a four-digit hexadecimal number will be displayed, and the test will expect the remaining 51 key depressions before displaying a failure message. Upon successful completion of the test, the message "Kbd1 OK" is momentarily displayed before the test menu is redisplayed.4: Kbd2. This test required you to press only some of the keys on the keyboard. (The HP-48GX Kbd2 test appears to test keyboard scan lines, so presumably this test does the same thing.) The following keys must be pressed in the following order to successfully finish this test: the six keys on the top row from left to right, SYMB, PLOT, NUM, HOME, APLET, VIEWS, Cursor-Left, and finally the Comma key. If a key is pressed out of order or bounces, a different beep and a four-digit hexadecimal number will be displayed. The message "Kbd2 OK" is momentarily displayed upon successful completion of the test.5: FullRAM. This test tests all 256K of RAM in the calculator. "OK" is displayed as the test of each 128K bank is completed.6: RS232. Tests the RS232 I/O port.7: IR. Tests the IR I/O port.ON: Reboot. Exits the self test function and resets the calculator.A quick test can be performed by simultaneously pressing ON and the sixth key (labeled "F" in the illustration to the right) on the top row. This test cycles through the ERAM, CPU, RAM, display, Kbd2, RS232 and IR tests. This test can be exited by pressing ON and the third key (labeled "C" in the illustration to the right) on the top row simultaneously.</div>HP-48S/SX/G/G+/GXhttps://landsurveyorsunited.com/photo/hp-48s-sx-g-g-gx2012-06-03T19:58:51.000Z2012-06-03T19:58:51.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206095269?profile=RESIZE_180x180&width=160"></div><div>WARNING: Invoking the test described below may result in the clearing of data memory, program memory, and mode settings.The HP-48 series calculators have built-in internal, display, and keyboard test functions. These functions are accessed by pressing and holding the ON key then pressing one of the keys on the top row of the keyboard.A continuous internal/display test is performed by simultaneously pressing the ON key and the E key (the fifth key on the top row). This test will cycle through CPU, display, IROM, and IRAM tests. "OK-48" is briefly displayed before starting over. This cycling test is cancelled by simultaneously pressing the ON key and the C key (the third key on the top row).Individual tests can be performed by simultaneously pressing the ON key and the D key (the fourth key on the top row). No menu is displayed, however a vertical line is displayed down the center of the display. Most of the keys in the top five rows of the keyboard have a unique test assigned to them, however only those tests associated with the top row of keys will be discussed. Simultaneously press ON and C (the third key on the top row) to exit the individual test mode.A: SPD. This appears to be a CPU test.B: Display. This display test generates a series of test patterns. A key must be pressed to sequence through the seven test patterns.C: IROM. This test tests the internal ROM of the calculator. If the test completes successfully, "IROM OK" is displayed.D: IRAM. The internal RAM of the calculator is tested. If the test completes successfully, "IRAM OK" is displayed.E: KBD1. This test requires you to press each key from left to right, from the top row to the bottom row. The calculator beeps as each key is pressed. If a key is pressed out or order, a different beep is heard and a five-digit hexadecimal number will be displayed. Upon successful completion of the test, the message "KBD1 OK" is displayed.F: KBD2. This test appears to test the keyboard scan lines, and requires only a few keys to be pressed. The following keys, outlined in yellow in the illustration at the right, must be pressed in the following order to successfully complete this test: B, CST, Cursor-Left, yx, Backspace, Alpha, 4, 2, SPC. "KBD2 OK" displayed upon successful completion of the test.</div>Spice Series HP Calculatorshttps://landsurveyorsunited.com/photo/spice-series-hp-calculators2012-06-03T19:58:50.000Z2012-06-03T19:58:50.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206093932?profile=RESIZE_400x&width=222"></div><div>Spice series calculators, which include the LED HP-31E, HP-32E, HP-33E/C, and HP-34C scientific calculators, can be tested by simply pressing STO, then pressing ENTER. After a couple of seconds, all segments in the display will light to indicate the calculator successfully completed its internal self-test.This STO then ENTER test probably also works with the HP-37E and HP-38E/C business calculators, but this has not been verified by this author.</div>Voyager Series HP Calculatorshttps://landsurveyorsunited.com/photo/voyager-series-hp-calculators2012-06-03T19:58:49.000Z2012-06-03T19:58:49.000ZAxeMen Site Prephttps://landsurveyorsunited.com/surveyors/AxeMenSitePrep<div><img src="https://storage.ning.com/topology/rest/1.0/file/get/1206093926?profile=RESIZE_400x&width=375"></div><div>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.</div>