If you want to voice type on a Mac or Windows PC, you need to use Google Docs in a Chrome web browser. Tap the microphone icon on the right side of the screen above the on-screen keyboard to start Voice Typing on an Android phone or tablet. Here’s how it works: To start voice typing on an iOS device, tap the microphone icon to the left of the spacebar near the bottom of the screen. Voice Typing works in Chrome on the desktop, as well as the Docs apps for Apple iOS (iPhone and iPad) and Android. Voice Typing is different, though it’s kind of a built-in version of Dragon NaturallySpeaking (for those of you who remember and/or still use that program). In a world with Apple’s Siri, Microsoft’s Cortana, and Google Now, a free speech-to-text service that works on multiple computing platforms may not seem like big news anymore. This would have been huge news 20 years ago, yet when Google unveiled it, it was only described in a single paragraph in a middle of a larger blog entry. Last week, Google announced it has added free speech-to-text capabilities to Google Docs (Google calls it Voice Typing).