CER Cer, or CER may refer to: Environment * Certified Emission Reduction, emission units Statistics * Control event rate, a statistical value in epidemiology * Crossover error rate, a statistical value in a biometric system Information Technology ...

( Serbian: Цифарски Електронски Рачунар / Cifarski Elektronski Računar - ''Digital Electronic Computer'') model 20 was an early digital computer developed by

Mihajlo Pupin Institute Mihajlo Pupin Institute ( sr, Институт Михајло Пупин, Institut Mihajlo Pupin) is an institute based in Belgrade, Serbia. It is named after Mihajlo Idvorski Pupin and is part of the University of Belgrade. It is notable for m ...

(

Serbia Serbia (, ; Serbian: , , ), officially the Republic of Serbia (Serbian: , , ), is a landlocked country in Southeastern and Central Europe, situated at the crossroads of the Pannonian Basin and the Balkans. It shares land borders with Hung ...

). It was designed as a functioning prototype of an "electronic bookkeeping machine". The first prototype was planned for 1964.

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See also