Could 2,000-year-old machine from tomb in China be world’s earliest binary computer?

The computer, at its core, is an input-output device: it receives instructions, executes programmes, performs calculations automatically and produces results. By this fundamental definition, China’s ancient ti hua ji, or figured loom – dating back more than two millennia to the Western Han dynasty – may well be recognised as the world’s earliest computer, according to the China Association for Science and Technology (CAST). Unearthed in 2012 from a tomb dated to around 150BC in Chengdu,...