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	Browse Inventions: Data Storage Machine Data Storage Machine Data Storage Machine Design of automobile and motorcycle engines Differential Analyzer In 1931, Vannevar Bush completed work on his most significant invention, the differential analyzer, a precursor to the modern computer. Digital Computer Complex Computer George R. Stibitz is internationally recognized as the father of the m . . . . Digital Packet Switching Packetized Ensemble Modem Paul Baran developed a fundamental concept behind today's advanced com . . . . Digital Packet Switching Direct current dynamo Dishwasher Disposable Medical Trays Medical Devices Disposable Medical Trays Dissolvable Pills DNA Sequencer Dolby Noise Reduction Noise Reduction Systems Ray Dolby revolutionized the audio industry in the 1960s by inventing . . . . Door lock DRAM Field-Effect Transistor Memory Robert Heath Dennard invented one-transistor Dynamic Random Access Mem . . . . Dynamite Improved Explosive Compounds Alfred Nobel, the inventor of dynamite, was also a great industrialist . . . .