The MRB Z1013 (German: Mikrorechnerbausatz, lit. 'microcomputer kit') was an East German single-board computer produced by VEB Robotron Riesa which was primarily intended for private use and educational institutions. It was powered by a U880 processor (a Z80 clone) and sold together with a membrane (flat foil) keyboard. Initially, the kit was equipped with 16-KByte DRAM, which was later replaced by a 64-KByte version. This groundbreaking standardization was due to the need for common standards and compatibility between computer users in the Eastern Bloc.