Calculator [UPDATED v3.2]
![Calculator [UPDATED v3.2]](http://amazfitwatchfaces.com/storage/mi-band/img/1766939078_9855524a42.jpg)
Smart Band 10 appen
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Description
1. Returns to the numeric keypad page after each mathematical symbol input, enhancing input smoothness.
2. Added logarithm calculations, including common logarithms, natural logarithms, and logarithms with arbitrary bases (log(property/base) log(8/2) = 3, i.e., log₂8)
. 3. Added factorial.
4. Added QR code to jump to the current post?
Calculator Instructions (AI-written - Human-proofed):
Basic Operations
Numbers and Symbols: Click 0–9, ., +, -, *, /, (,) for basic calculations.
Example: (5 + 3) * 2 = 16
Clear:
C: Clear all input
(Delete key): Delete the last character
Equal to: Click = to see the result
Exponentiation
Use ** to represent exponents (JavaScript standard syntax)
Example:
2**3 → 8 (2 to the power of 3)
4**(1/2) → 2 (square root)
8**(-1) → 0.125 (reciprocal)
e**2 → ≈7.389
PI**2 → ≈9.8696
Tip: Use parentheses for negative or fractional exponents, such as 2* (-3), 27* (1/3)
Modulo (%)
% represents modulo, not percentage!
Syntax: a % b → Returns the remainder of a divided by b
Examples:
10 % 3 → 1
15 % 4 → 3
7 % 2 → 1
Note: The sign of the result must match the dividend, e.g., -7 % 3 → -1
Percentages are not supported (e.g., 50% will be treated as 50% [the next number], usually leading to errors)
Mathematical Functions (Click "More" to expand)
Button Function Input Format Example
√ Square Root sqrt(x) sqrt(25) → 5
c Cosine cos(x) cos(0) → 1
s Sine sin(x) sin(PI/2) → 1
t Tangent tan(x) tan(PI/4) → 1
x! Factorial fact(x) fact(4) → 24
lg Common Logarithms (base 10) lg(x) lg(100) → 2
log Logarithm with any base log(argument/base) log(8/2) → 3 (i.e., log₂8)
ln Natural logarithm (base e) ln(x) ln(e) → 1
Note:
All functions require manual completion of the right parenthesis, such as sin(PI/2).
Trigonometric function parameters are in radians (π radians = 180°).
Factorials only accept non-negative integers, with a range of 0 ≤ n ≤ 170.
Constant
Π → Pi (≈3.1415926535)
e → Natural constant e (≈2.7182818284)
Examples: e**PI, PI*e, cos(PI), etc. can all be used directly.
Usage Tips
Nested calls: fact(sqrt(16)) → fact(4) → 24
Mixed expressions: 2**3 + lg(1000) - 10%3 → 8 + 3 - 1 = 10
exact square root: 16**(1/4) → 2 (fourth root)
Negative number handling: (-2)**3 → -8 (parentheses are required)
Common errors
Incorrect input reason Correct writing
log(8,2) comma separation not supported log(8/2)
sin 30 missing parentheses sin(30) (and 30 is in radians!)
50% alone meaningless % must be between two numbers, such as 100%7
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