What is a brief history of clock radios?

Wake up it's time to go to work. That beep is the alarm clock and no you don't get to go back to sleep. That sound is from a sophisticated machine and many hours of research went into it to wake you up, so get up. Years took the role in making this wake-up device now wake up. Put on your socks put on your pants and put on your shirt. The day is calling. The sun is bright.