Máy tính Khoa học – RAD

Compact scientific calculator for students, engineers, and general users. Minimalist interface. Large keys. Direct calculation in radians for trigonometric functions. Main features Trigonometry (radians): sinr, cosr, tanr. Logarithms: log (natural), log10. Invert: 1/x. Powers: eˣ, x², xʸ. Absolute value: |x|. Constants: π, e. Calculation history: view and re-paste. Standard math symbols: fast input, clear display. Copy results: one touch. Offline operation: no network required.