Of course, normally one wants one of them - permanently - so the switch is not very convenient. In some places, the dot and comma are used exactly the opposite way. We also use commas to separate groups of three digits. In normal American usage, we use the "decimal point" (a period) as the "radix mark" - to separate the integer and decimal parts of a number. (decimal point) key, and turn calculator ON while holding down the. Problem: Decimal points appear as commas, and vice versa. I'm happy to accept contributions - or corrections. (Or perhaps it is a FPP = frequently posed problems.) If yes, how would you like your name listed? ("handles" ok.) May we list your name in the collection (at the web site), to give you credit for providing this information? We will not make your e-mail available in any case. We will not list your name at the web site without your explicit permission. Please provide your name and e-mail, so I can check back with you if there are questions (and maybe have you proofread the web page for your calculator). These are ->RAD (f-shift 3) and ->DEG (g-shift 3).īoth of these functions work on a pair of values, in the X and Y registers. There are also keys to convert an individual entry from one form to another. (In radians mode, RAD appears on the display.) RAD (g-shift 8) sets it to work in radians. Not commonly used.)ĭEG (g-shift 7) sets the calculator to work in degrees The grad is 0.9 degree, so that a right angle is 100 grad. (Some calculators also have an option for "grad". These are functions we do not use in intro chem, but which you are likely to use in other math and science courses. How are the keys labeled for natural logs and antilogs? We do not use these in intro chem, but you are likely to use them if you go much beyond that. That holds for other one-key functions, such as antilog and square root: enter the number first, then the function.īase e logs (log e or ln) are called natural logs. * On some calculators, you press the LOG key before the number, and on some you press the number then the LOG key.ġ0 x To take the log 10 of 1000 which do you enter first, the number or the LOG key?
For example, the log 10 of 1000 is 3 and then the antilog 10 of 3 is 1000. The log 10 is the power of 10 of the number. In intro chem we most often use base 10 logs (log 10), for example with pH. You must follow the SCI or FIX key with a single digit (0-9) specifying the number of decimal places.į-shift SCI 4 - sets the display to scientific notation with four decimal places.į-shift FIX 0 - sets the display to fixed decimal notation with zero decimal places. The FIX key (f-shift 7) sets the display to fixed decimal notation. The SCI key (f-shift 8) sets the display to scientific notation. (Some calculators also have an option for "Engineering notation", which is a variation of Scientific notation. Many calculators allow you to set the number of decimal places displayed. HP-11C Most scientific calculators allow you to "force" the display to use (or to not use) scientific notation. What is the key for making an exponent negative?
When entering a number that starts with 1x in scientific notation, do you need to enter the 1? (e.g., 1x10 12) HP-11C What is the label on the key for entering exponents? * The key for making an exponent negative is the same key used for entering negative numbers. Do you need to enter the 1 to get the correct answer, 2x10 12? Do it twice, once with the first 1 and once without it. * A special case concerns entering a number that starts with 1x in scientific notation: do you need to enter the 1? Try it. Identify the key used to enter the exponent. HP-11C What is the label on the "shift" key(s) Shift keys are used to get the second (or third) function for a particular key. Otherwise, you will figure that out later on the form. If you know which type yours is, you can write that here.
This calculator has an ENTER key (big key, middle of bottom row), and does not have an = key.Īlgebraic calculators can be further subdivided into AOS and DAL. On an RPN calculator, you type "2 ENTER 3 +". To add two numbers (say, 2 & 3) on an algebraic calculator, you type the keys "2 + 3 =". Does your calculator use algebraic or RPN (reverse Polish notation) logic? How do you tell? An algebraic calculator has an = key An RPN calculator has an ENTER key. (Provided by the author of this page.)īottom of page return links and contact information
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