Notebook Calculator vs I'm Hero OBD2 Scanner

DOING LONG CALCULATIONS IN NOTEBOOK ! GO BACK & CHANGE ERRORS EASILY ! JUST LIKE TYPE IN A TEXT FIELD ! COPY + CUT + PASTE EDIT & SAVE CALCULATION HISTORY ! SCIENTIFIC & GRAPHIC CALCULATOR ! • It Supports the File Management ! - Create a file - Save - Open - Delete • Mathematical Functions: SIN(X) : sine of x COS(X) : cosine of x TAN(X) : tangent of x COT(X) : cotangent of x ASIN(X) : arcsine of x ACOS(X) : arccosine of x ATAN(X) : arctangent of x SINH(X) : hyperbolic sine COSH(X) : hyperbolic cosine TANH(X) : hyperbolic tangent ASINH(X) : inverse hyperbolic sine ACOSH(X) : inverse hyperbolic cosine ATANH(X) : inverse hyperbolic tangent SQRT(X) : square root of x ABS(X) : absolute value of x FCT(X) : x factorial LOG(X,Y) : logarithm of y to base x LN(X) : natural logarithm of x LOG(X) : base-10 logarithm of x LOG10(X) : base-10 logarithm of x LOG2(X) : base-2 logarithm of x EXP(X) : base-e exponential of x ERF(X) : the error function of x ERFC(X) : the complementary error function of x ROUND(X) : integral nearest to x CEIL(X) : the smallest integral that is not less than x FLOOR(X) : the largest integral that is not greater than x TGAMMA(X) : the gamma function of x LGAMMA(X) : the natural logarithm of the absolute value of the gamma function of x X^Y : y-th power of x • Statistical functions: SUM(a1,a2,a3,a4) : a1+a2+a3+a4 AVERAGE(a1,a2,a3,a4) : (a1+a2+a3+a4)÷4 VARIANCE(a1,a2,a3,a4) : variance SD(...) : standard deviation SUMSQ(...) : sum of squares AD(...) : absolute deviation CV(...) : coefficient of variation SVARIANCE(...) : sample variance SSD(...) : sample standard deviation SCV(...) : sample coefficient of variance • Help Manual: “//” means a line comment or annotation. A=2 B=3 C=A+B Click “Run”, the screen shows: C=5 If the line C=A+B is annotated , A=2 B=3 //C=A+B Click “Run”, the screen shows: B=3 - Variable Naming Rules: Start with letters, and not involving keywords. A, A1, B25, HAT (right) PRINT1, COS (wrong) - The Usage of PRINT: A=10+5 B=10/5 PRITN A,B Click “Run”, the screen shows: A=15 B=2 Default variable name is RESULT , e.g. 16+5*6 Click “Run”, the screen shows: RESULT=46 - Combination & Arrangement: C(n,k) = n!/(k!(n-k)!) A(n,k) = n!/(n-k)! - Complex Number When there is “i” or “∠” on the screen, it automatically enters Complex Number Calculation Mode. e.g. X=3+4i or X=5∠53.1° 9 functions are available for the Mode. SIN(X), COS(X), TAN(X) COT(X), SINH(X), COSH(X) SQRT(X), ABS(X), CONJUGATE(X) - Integral INTEGRAL X²,2,4 Default precision is 300 times of calculations. It can be more accurate, e.g. 500 times. INTEGRAL X²,2,4,500 - Graphics PLOT SIN(X) PLOT X² Default length = 10, width = 10. Specify the lenght = 20, width = 5. Then we have, PLOT X²,20,5 Default dense is 150 points. It also can be customized, e.g. 200 points. PLOT X²,20,5,200

Turn your car's cryptic check-engine light into something you can actually act on. I'm Hero OBD2 Scanner connects to a standard ELM327 OBD-II adapter over Bluetooth LE or Wi-Fi and shows what your car is doing — in plain language. • Live data — RPM, speed, coolant, fuel trims, O2, intake and more on clean gauges, showing only the parameters your car supports. • Trouble codes — read and clear stored, pending and permanent codes, each with a description and a freeze-frame snapshot from the moment it set. • Explain with AI — tap a code for a plain-English explanation of what it means, common causes, how serious it is, and typical next steps. • Emissions readiness — check the MIL status and which monitors are ready before an inspection or buying a used car. • VIN & vehicle info, battery voltage, and drive-session logging with charts and CSV export. No account. Your vehicle data stays on your device. Works with common ELM327 adapters (Veepeak, Vgate and similar). No adapter yet? Try the built-in Demo mode. A trouble code points to a symptom, not a guaranteed part — always have a professional confirm before repairs.