RootM™ 1.2 Features

General Features

• Natural calculator interface
• Easy complex number input via +i and /_ (angle) separators
• Personalizable color keyboard (6 color choices, 6 on a grayscale device, 2 on a B&W device)
• IEEE Double precision accuracy (about 16 digits and full IEEE range 2.3e-308 to 1.7e+308)
• 16 element stack
• 30 key keyboard (3 functions per key)
• Function pop-up on main screen provides access to all built-in functions
• Graffiti input, copy and paste
• 20 digit display with SCI, FIX, and ENG formats. Exponents from -308 to 308.
• Status indicators for shift state, angle mode, and financial annuity mode.
• Degrees, radians, and grads angle modes
• Preferences to set the number of digits, angle mode, display format, wordsize
• Real/Imag or Magnitude/Phase complex display format
• Built-in quick reference
• Extensive documentation

Memory

• 16 element stack (capable of storing complex numbers)
• 20 global registers (10 are directly accessible via the keyboard)
• Ability to swap primary and secondary registers.
• stack and register functions: clstk, clreg, clx, p<>s, x<>y
• stack roll up and roll down via hardware scroll buttons.
• View registers and stack
• Quick stack pop-up and selection (tap display)

Complex-valued Scientific Functions

• sin, cos, tan, sin^-1, cos^-1, tan^-1, atan2
• sinh, cosh, tanh, asinh, acosh, atanh
• ln, lnp1, log, e^x, expm1, 10^x, y^x, x², sqrt, 1/x
• conj, abs, arg, R->C, C->R, R->P, P->R

Real-valued Scientific Functions

• int, frac, floor, ceil, abs, mod, chop, pi
• deg, rad, hours, H.MS, seconds

Financial Functions

• N (number of periods)
• i (percent interest per period)
• PMT (payment per period)
• PV (present value)
• FV (future value)
• CLFIN (clear financial registers)
• Annuity preference (toggle between payments due at the beginning of the period and payments due at the end of the period)
• View financial registers

Statistics Functions

• S+ (accumulate statistics)
• S- (remove data from statistics)
• mean, std, rand
• %, % change, N! (factorial)
• clrstats (clear statistics registers)
• View statistics registers

Number Base Functions

• hex, dec, oct, bin
• modular addition, modular subtraction, modular division, modular multiplication
• two's complement
• and, or
• wordsize preference (up to 48 bits)