I offer for sale a Robotron K1715 made in German Democratic :D Republic in 1984. The unit has three parts - CPU unit, Monitor and Keyboard. It has two 5.25" Floppy 720 kB each, 64 kByte DRAM. The CPU is U880D - a GDR clone of Z80. The keybord has its own Z80 CPU and is connected to CPU unit via...