Trinimon Calculator

First of all many thanks for using this calculator! Initially it has been developed as a rapid prototype for a J2ME calculator. Thanks to the PhoneGap framework I could port the HTML and Javascript sources rather easily to the Android platform.

I performed lots of tests and put some extra efforts on it in order to make the application more comfortable for Android devices. Anyhow I know there is always room for improvements, so please don't hesitate to contact me, if you experience any kind of problems or if you have suggestions to it.

About the calculators features: it supports basic arithmetic operations, trigonometric and logaritmic functions, binary, octal and hexadecimal calculations and comes along with 40 constants. Many features are rather self-explanatory as the calculator works pretty similar as a usual calculator.

Keys

Inv	press this key for using second, invers and hyperbolic functions or for getting the second set of constants
Con	using this key you can recall one of the 40 constants
Mod	the calculator support different modes. use ...
Mod 0	for decimal calculations (default)
Mod 1	for binary calculations
Mod 2	for octal calculations
Mod 3	for hexadecimal calculations
Mod 4	for trigonometric calculations in degrees (default)
Mod 5	for trigonometric calculations in radian
Mod 6	for trigonometric calculations in grad
Ac	clear all
C	clear last number
Bs	remove last digit
EE	add an exponent
Ran	returns a random number between 0 and 1
¾	key for fractional arithmetic

Hardware keyboard

Since version 1.2.6 the Trinimon scientific calculator supports hardware keybords for basic arithmetics. Following table shows the mapping of keyboard keys to painted calculator keys:

Hardware key Calculators key Description

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 digits

. . decimal point

e EE exponent

s ± sign

# ¾ fraction

+ - × ÷ + - × ÷ basic arithmetics

( ) ( ) brackets

a Ac clear all

b Bs backspace

i Inv second, invers and hyperbolic functions

c Con constants

m Mod modes

= ↵ = result

Display

The display area consists of an eleven-digits mantissa plus sign, a two-digits exponent plus sign and three status symbols.

The following table lists positions, symbols an their meaning:

Position Symbol Bedeutung

1 iF Invers or second function

1 H Hyperbolic function (only trigonometric functions)

1 iH Invers hyperbolic function (only trigonometric functions)

1 C Query constant

2 M Memory contains a value

3 D Calculations based on decimal system; enter angles in degree

3 R Calculations based on decimal system; enter angles in radian

3 G Calculations based on decimal system; enter angles in grad

3 B Calculations based on binary system

3 O Calculations based on octal system

3 H Calculations based on hexadecimal system

Sample calculations

3 + 2 × 4 = 11
2³ - ln 4 = 6.61370...
3.25 × 10¹⁵ ÷ e^π = 1.4044... × 10¹⁴
-¼ × sinh^-1 8! = -2.8244...
T₀ ÷ ( 2 + sin^-1 1 ) = -2.9690...
100101_Bin ÷ 11_Bin = 1100
1/3 + 1/2 × 4/7 = 13/21
A1F_Hex Or 1D1_Hex And B0B_Hex = B1F

Constants

Con 0	e	Elementary charge	1.602176462e-19
Con 1	μ₀	Mag. constant	12.566370614e-7
Con 2	ε₀	Electric constant	8.854187816e-12
Con 3	c	Speed of light in vacuum	299792458
Con 4	G	Newtonian constant of gravitation	6.67428e-11
Con 5	g_n	Standard acceleration of gravity	9.80665
Con 6	N_A	Avogadro constant	6.02214179e23
Con 7	k	Boltzmann constant	1.3806504e-23
Con 8	R	Molar gas constant	8.314472
Con 9	σ	Stefan-Boltzmann constant	5.6704e-8
Con EE	T₀	Absolute zero	-273.15
Con .	V_m	Molar volume of ideal gas	22.413996
Con π	P_n	Standard atmosphere	101325
Con e	h	Planck constant	6.6260695729e-34
Con ×	Λ	Cosmological constant	2.0766433e-43
Con ÷	ћ	Reduced Planck constant	1.054571726e-34
Con 1/x	α	Fine-structure constant	7.297352533e-3
Con +	m_e	Electron mass	9.10938188e-31
Con -	r_e	Classical electron radius	2.81794033e-15
Con ±	m_p	Proton mass	1.67262158e-27
Con^-1 0	m_n	Neutron mass	1.6749286e-27
Con^-1 1	Y_e	Electron gyromag. ratio	1.760859708e11
Con^-1 2	R_∞	Rydberg constant	1.0973731534e7
Con^-1 3	E_R	Rydberg constant times c in Hz	3.289841960360e15
Con^-1 4	f_R	Rydberg constant times hc in eV	13.6051413843
Con^-1 5	a₀	Bohr radius	0.52917721086e-10
Con^-1 6	μ_B	Bohr magneton	9.2740091523e-24
Con^-1 7	μ_e	Electron mag. mom.	-9.2847637723e-24
Con^-1 8	g_e	Electron g factor	2.002319304386
Con^-1 9	μ_N	Nuclear magneton	5.05078324e-27
Con^-1 EE	μ_P	Proton mag. mom.	1.41060761e-26
Con^-1 .	Y_p	Proton gyromag. ratio	2.675222099e8
Con^-1 π	μ'_p	Shielded proton mag. mom. to Bohr magneton ratio	1.520993129e-3
Con^-1 e	Y'_p	Shielded proton gyromag. ratio over 2 pi	42.576375
Con^-1 ×	m_u	Unified atomic mass unit	1.66053873e-27
Con^-1 ÷	F	Faraday constant	9.6485339e4
Con^-1 1/x	Φ₀	Mag. flux quantum	2.06783364e-15
Con^-1 +	E_h	Hartree energy	4.3597482e-18
Con^-1 -	c₁	First radiation constant	3.7417749e-16
Con^-1 ±	c₂	Second radiation constant	1.43876912e-2

Deutsche Version Impressum

Hardware key	Calculators key	Description
0 1 2 3 4 5 6 7 8 9	0 1 2 3 4 5 6 7 8 9	digits
.	.	decimal point
e	EE	exponent
s	±	sign
#	¾	fraction
+ - × ÷	+ - × ÷	basic arithmetics
( )	( )	brackets
a	Ac	clear all
b	Bs	backspace
i	Inv	second, invers and hyperbolic functions
c	Con	constants
m	Mod	modes
= ↵	=	result

Position	Symbol	Bedeutung
1	iF	Invers or second function
1	H	Hyperbolic function (only trigonometric functions)
1	iH	Invers hyperbolic function (only trigonometric functions)
1	C	Query constant
2	M	Memory contains a value
3	D	Calculations based on decimal system; enter angles in degree
3	R	Calculations based on decimal system; enter angles in radian
3	G	Calculations based on decimal system; enter angles in grad
3	B	Calculations based on binary system
3	O	Calculations based on octal system
3	H	Calculations based on hexadecimal system