For example, the sequence 3.15.16 →cm converts 3 15⁄16 inches to 10.0 cm (approximately). After displaying a message, the program either stops until R/S is pressed, or if a PSE (pause) instruction follows the message then it pauses for one second before continuing. They can be decomposed using the ABS (radius r) and ARG (angle Θ) functions. The expression can be edited using the arrow and backspace keys, and re-evaluated as desired. xref
Base-e (natural) logarithms and exponentiation can be used, but not base-10. Systems of two equations with two variables, and three equations with three variables, are supported. The HP 35s uses an operational stack of four registers, called X, Y, Z and T and LASTx. Indirect branching, which allows the contents of a memory register to be used as the target of a branching instruction (GTO or XEQ) is omitted from the HP 35s. Vectors can be added, subtracted, multiplied and divided by scalars. [9] Working with hexadecimal and other non-decimal bases has been criticised as requiring excessive and unintuitive keystrokes. In the HP 33s, complex numbers were stored as two separate values, and the "complex" modifier was used to indicate that an operation was to treat the stack as containing complex numbers. [18] The permanently allocated variables and the statistics registers may also be accessed indirectly, using negative sequence numbers of -1 to -32. The entry mode can be easily changed by the user. Although it is a successor to the HP 33s, it was introduced to commemorate the 35th anniversary of the HP-35, Hewlett-Packard's first pocket calculator (and the world's first pocket scientific calculator). endstream
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Probability functions (combinations and permutations) are available, as well as random numbers. Since an equation can contain any sequence of characters, it may be composed as a message to be displayed. Regardless of which display base is set, non-decimal numbers must be entered with a suffix indicating their base, which involves three or more extra keystrokes.[2]. The calculator provides a set of 41 mathematical and physical constants, which may be scrolled through and selected using the CONST key. These four stack registers are easily accessed using keys whether in a program or in normal computations. Vectors can also be used to simply store up to three real numbers together, thereby increasing the calculator's storage capacity, though with more complexity and reduced speed. endstream
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<. When hexadecimal is selected, the row of six keys normally used for floating-point functions (trigonometry, logarithms, exponentiation, etc.) [9][10] Particular mention has been made of the traditional HP feel of the keyboard with a big ↵ Enter key back in its traditional place. The above example of adding 12 + 34i and 56 + 78i then becomes: 12i34↵ Enter56i78+. Support for vector operations is new in the HP 35s. On the 35s, the number of functions able to handle complex numbers is limited and somewhat arbitrary. The ABS function will return a vector's magnitude. Like most HP calculators, it defaults to RPN. 0000001521 00000 n
There are also two built-in entries in the equations list, to allow solving all variables in a system of linear equations. Here is a sample program that computes the factorial of an integer number from 2 to 69 (ignoring the calculator's built-in factorial/gamma function). [16] A vector may be stored on the stack, or in any variable, as a single value, and processed by various functions. To facilitate those who still use traditional units, and for other uses, the calculator also allows the entry of values as mixed fractions and the display of values as mixed fractions. [2][5], Response to the calculator's logic has been mixed. In non-decimal bases, the word length is fixed at 36 bits, and uses two's complement negation. The physical appearance and keyboard layout of the HP 35s is very different than that of its immediate predecessor, the HP 33s, but the two calculators are functionally very similar. ", "HP 35s scientific calculator - User Guide", "Tear Down: Scientific calculator boils design down to two ICs", "Review: HP 35s Programmable Scientific Calculator", American Society for Engineering Education, "HP 33s Scientific Calculator User's Guide", "HP 35s: Indirect register data packing program", "Programming and Working with Indirectly Addressed Memory on the HP 35s", https://en.wikipedia.org/w/index.php?title=HP_35s&oldid=976151367, Creative Commons Attribution-ShareAlike License, 158 × 82 × 18.2 mm (6.22 × 3.23 × 0.72 in), Start with the number 1 placed in stack register X, Recall N (memory), placed in X the stack moves up and then multiply two lowest stack registers, End of program - result is in x (stack) and displayed, Over 800 memory registers (26 directly labelled), Operation in decimal, binary, octal, hexadecimal, Equation solver with arbitrary variable isolation (first seen on the, Support for input and display of fractions, Unit conversions and table of physical constants.