I was a C.A student and my accounts sir always told us to use Citizen Ct-500 calculator.At first I used to get very annoyed that why he wants us to use the specific calculator.But without real willingness to buy I had to buy a this calculator.
This calculator comes in square shape with on swicth it has green colour.the best thing about this calculator is we can check steps.In C.a we have to do lots of steps and doing steps again and again is tough.So we can check all the steps what we have done making the task easier.Then in this calculor we can perform some calculations which cannot be perfomed in all calculators.In C.A maximum students uses this calculator.
Even after completing C.A I use this calculator as I find this is the best calculator.