ডাটা স্টোরেজ ডিভাইস সর্বপ্রথম কে আবিষ্কার করেন ?
Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria. Drums were widely used in the 1950s and into the 1960s as computer memory.
Gustav Tauschek