How to Find Scientific calculator is original or duplicate ?

Basically engineering students need a Good quality Scientific Calculator for Problem Solving.

Now-a-days several duplicate and local companies calculator are available in the market with low prize and impressive outlook for sales. But they didn't care about battery cell backup , button quality and more features such as software also.

Here are some steps to check whether the calculator software is original,

Step 1 : Press and hold Following Three buttons at same time

• "Shift button"
•  "Number 7 button"
•  ON button..

Now in the display screen, you should see all options or all pixels are ON.

Step 2 : Then press Shift button continuously till Number '1' appears on the screen.

Step 3 : Now press all the buttons in the calculator starting from Alpha button sequentially, except  for the "ON" button..

Step 4 : After pressing all buttons, finally press "="

then it should show '44 OK'..

If it shows, '44 OK' then the calculator is good for your Engineering Mathematics..

Basically CASIO is a Good brand for Calculators...

Enjoy Calculating :-)

How to fix White screen Problem on Sony Cyber-Shot

Sony Cyber-shot
Carl Zeiss Vario-Tessar
Optimal Zoom 3x

 Sony Cyber-Shot

There is a Common Problem in Sony Cyber-Shot,

the screen goes white and it seems like the camera is dead.

But Don't worry ...There is an Option to Try.

Just Press and Hold Right most bottom corner of the camera screen.

and Press the "ON" Button at the Same Time