Question 1

Does this calculator support keyboard input?

Accepted Answer

Yes. Full keyboard support: digits 0-9, operators (+, -, *, /), Enter for equals, Escape for clear, and Backspace to delete. This makes it as fast to use as a physical calculator. Keyboard input works the same as clicking the on-screen buttons.

Question 2

What is the difference between DEG and RAD mode?

Accepted Answer

DEG (degrees) and RAD (radians) are two ways to measure angles. A full circle = 360 degrees = 2π radians. Use DEG for everyday angle problems and most physics. Use RAD for calculus, complex numbers, and most programming contexts. Switch using the DEG/RAD button.

Question 3

How do I use the 2nd button?

Accepted Answer

The 2nd button reveals secondary functions. Pressing it switches sin/cos/tan to their inverse functions (sin⁻¹, cos⁻¹, tan⁻¹), log/ln/log₂ to hyperbolic functions (sinh, cosh, tanh), and x²/x³/xⁿ to exponential functions (eˣ, 10ˣ, 2ˣ). Press 2nd again to return to primary functions.

Question 4

How do I calculate sin, cos, or tan?

Accepted Answer

Press the sin, cos or tan button first, then type your angle value and press =. Example: sin(30) in DEG mode gives 0.5. For inverse trig (to find the angle), press 2nd first, then sin⁻¹, enter the value, and press =. Make sure DEG/RAD mode matches your expected input format.

Question 5

Can I use the previous answer in a new calculation?

Accepted Answer

Yes. Press the ANS button to insert the last result into your current expression. Example: calculate 25*4=100, then press ANS+50= to get 150. The History panel (Hist button) shows your last 20 calculations and lets you tap any result to reuse it as the current value.

الآلة الحاسبة العلمية

الأسئلة الشائعة

الآلة الحاسبة العلمية

❓الأسئلة الشائعة

الأسئلة الشائعة