The world often perceives computers as products of the modern age, but an intriguing discovery by Levi McClain challenges this notion. McClain unearthed plans for an early computing device, referred to as the arca musarithmica, in the pages of a historical book authored by the 17th-century polymath, Athanasius Kircher. This unique machine was designed to assist individuals, even those without musical training, in composing church music. While it may not resemble our contemporary understanding of a computer, McClain points out in the accompanying video that it shares several characteristics with mechanical computing devices, such as slide rules and mechanical calculators.

Despite being a relic from the past, there are only a handful of these devices preserved in existence today. Recognizing the rarity and significance of the arca musarithmica, McClain took the initiative to construct his own version using the original plans along with publicly available resources. His effort not only showcases a fascinating intersection of history and technology but also highlights the creative potential of merging old ideas with modern ingenuity.

McClain's recreation of this historic machine consists of a box filled with wooden tablets, each inscribed with instructions. However, for most laypeople, particularly those unfamiliar with the intricacies of music theory, deciphering the underlying algorithm can be quite challenging. Kircher himself described the device in his writing, emphasizing the innovative nature of mechanical music-making. He stated, Mechanical music-making is nothing more than a particular system invented by us whereby anyone, even the [unmusical], may, through various applications of compositional instruments, compose melodies according to a desired style. Kircher aimed to provide a straightforward approach to understanding how the Musarithmic Ark functions and its potential for democratizing music composition.

For those who might feel inspired to try replicating the experience, theres no need to dust off your woodworking tools and attempt to construct a wooden version from scratch. Instead, you can conveniently find replicas of this historical device available online. Should anyone embark on this musical adventure, McClain encourages you to share your creations within the Hackaday community.

While the debate continues regarding what qualifies as a 'computer', McClain and others argue for a broader view that includes mechanical devices like the arca musarithmica. The lines between traditional computing and mechanical ingenuity blur, inviting a re-examination of how we classify the tools we use to create and innovate.