![Africa As A Platform on X: "#TechFact The first mechanical alarm clock could only ring at 4 a.m. invented by Levi Hutchins in 1787. It wasn't until 1876 that a wind-up alarm Africa As A Platform on X: "#TechFact The first mechanical alarm clock could only ring at 4 a.m. invented by Levi Hutchins in 1787. It wasn't until 1876 that a wind-up alarm](https://pbs.twimg.com/media/EzG3h-UWgAEnhTe.jpg:large)
Africa As A Platform on X: "#TechFact The first mechanical alarm clock could only ring at 4 a.m. invented by Levi Hutchins in 1787. It wasn't until 1876 that a wind-up alarm
![How to Create Alarm Clock App | App inventor 2 tutorial for beginners | MIT App Inventor 2 - YouTube How to Create Alarm Clock App | App inventor 2 tutorial for beginners | MIT App Inventor 2 - YouTube](https://i.ytimg.com/vi/eTfNMIt_c20/hqdefault.jpg)
How to Create Alarm Clock App | App inventor 2 tutorial for beginners | MIT App Inventor 2 - YouTube
![The first known mechanical alarm clock inventor is Levi Hutchins, an American who, in 1787, invented a person… | Web design services, Web design, Computer companies The first known mechanical alarm clock inventor is Levi Hutchins, an American who, in 1787, invented a person… | Web design services, Web design, Computer companies](https://i.pinimg.com/originals/fa/5d/e5/fa5de5c93a0112be83e51081cb9cfe37.jpg)