Concept:A punch card machine is an early data-processing device that stores information as holes punched in cards and reads it electronically.
Explanation:Dr. Herman Hollerith invented the punch card tabulating machine in the late 19th century.
He developed this system to handle large volumes of data more efficiently than manual methods.
His machine stored data on punched cards, and electric machines read and counted the holes to analyse the information.
This invention was first used successfully to process the 1890 U.S. Census data.
Blaise Pascal invented the Pascaline, a mechanical calculator, not the punch card machine.
Gottfried Leibniz also built a mechanical calculating device, not a punch card system.
J. Prosper Eckert is known for his work on the ENIAC electronic computer, not punch cards.
Therefore, the correct inventor of the punch card machine is Dr. Herman Hollerith.
Answer:D. Dr. Herman Hollerith