Latest calculator where you don't have to press any keys to calculate. You just have to speak and Voice Calculator will automatically calculate what you say. Eg. If you want to calculate 45.30, to calculate, click on mic button and say forty five multiply by thirty and Voice Calculate will give you answer 1350. You can perform simple as well as complicated calculation by just speaking. Just keep in mind that you have to speak all the equation at one time and not splitting the equation. You can carry out long calculations too. It's very easy to use and very quick to calculate. You can perform faster calculation then typing or pressing keys.