Computer World deals with the themes of the rise of computers within society. Critics see this album as a peak in the career of Kraftwerk, along with The Man-Machine and Trans-Europe Express. The compositions are credited to Ralf Hütter, Florian Schneider, and Karl Bartos. In keeping with the album's concept, Kraftwerk showcased their music on an ambitious world tour and issued several different versions of the single "Pocket Calculator" in different languages: namely, German ("Taschenrechner"), French ("Mini Calculateur") and Japanese ("Dentaku," or 電卓). A fifth version, in Italian ("Mini Calcolatore"), was lip-synched to on Italian television in 1981.