The programmable calculator the HP-30b should have been
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09-07-2014, 01:07 AM
(This post was last modified: 09-07-2014 02:08 AM by Joseph_21sv.)
Post: #22
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RE: The programmable calculator the HP-30b should have been
Here are the preliminary specifications of the CW-32B
Display size: 7x83 dot matrix+15+3 seven segment digits Display color: Black/Red/Green Numerical precision: 15 digits Entry method: RPN, but dot matrix can be set to display textbook notation Memory: 74 numbers [A…Z, a…z, 0…9, .0….9, theta, (I)]+144 numbers addressed by (I) Memory arithmetic: + - * / ^ Mode settings: non-volatile Basic arithmetic + - * / ^ with shortcuts to x^2 sqrt(x) x! % %change %total Special functions: Redefinable keyboard: yes Shift keys: yes Alphabetic characters: accessible by ALPHA key Exponentials, Logarithms: base e, 10, y Trigonometrics: circular, hyperbolic, shortcut for pi tau=2*pi eta=pi/2 sigma=pi/4, degree and radian measure Statistics: Types: x, x-weight, x-y, x-y-weight, x-x1-y Storage: 96 data points Summation: x, x1, y, x*x1, x*y, x1*y, x*x1*y, x^2, x1^2, y^2 Measures of central tendency: Mean x, x weighted, x1, y, y weighted; population/sample standard deviation x, x weighted, x1, y, y weighted; population/sample standard error x, x weighted, x1, y, y weighted; covariance; Minimum, Q1, Median, Q3, Maximum x, x1, y Regression models: O(f(x)^4|f(x) in {x^a, 1/O(x^4), e^ax, ln(O(x)), sin(O(x)), sec(O(x)), sinh(O(x)), sech(O(x))}) Probability distributions: same as WP-34S (Pseudo-)Random Number Generator Date entry: month/day/year, day/month/year Date calculations: 30/360, actual/actual Menus/Prompts: yes—scrolling menus with softkeys RPN stack roll: bidirectional Radix mark: selectable ./, Thousands separator: toggleable Number formats: FIX/FLOAT Equation Solver: yes Absolute value, integer truncation: both Business/Financial functions: TVM solvers: standard, odd-period, Canadian, Lunisolar (P/nYR, C/nYR) TVM shortcuts: n=x*P/YR, i=x/C/YR Cash flow capacity: 96 groups, unlimited frequency Cash flow analysis: NPV, NFV, NUS, IRR, MIRR, FMRR, normal/discounted PBP Bond calculations: all types, price, yield, coupon rate, accrued interest, normal/modified Macaulay duration Amortization: accumulated interest, balance Depreciation calculations: Standard/French Straight line, Declining balance with or without crossover, Sum of Years’ digits, French Amortization, US Accelerated Cost Recovery System Markup calculations: percent of cost and price Break-even analysis: yes Black-Scholes equation: yes Interest rate conversions: yes Programming features: Storage: 576 steps Model: Editing: Display: yes Flow control: Branch target: addressed by step number or label Unconditional branching: yes Conditional branching: any Subroutines: GSB step number, XEQ label Loops: any Addressing: direct and indirect Flags: yes As you can see, I am up in the air about whether the calculator should be keystroke programmable or use a more sophisticated, computer-like, programming language and whether it should have one or two shift keys. What do you all think about these issues? |
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