Title: Hans Peter Luhn
Content: card machines of the past. Luhn spent greater and greater amounts of time on the problems of information retrieval and storage faced by libraries and documentation centers, and pioneered the use of data processing equipment in resolving these problems. "Luhn was the first, or among the first, to work out many of the basic techniques now commonplace in information science." These techniques included full-text processing; hash codes; Key Word in Context indexing (see also Herbert Marvin Ohlman); auto-indexing; automatic abstracting and the concept of selective dissemination of information (SDI). Luhn was a pioneer in "hash coding". In 1953, he suggested

Title: Herman Hollerith
Content: Herman Hollerith Herman Hollerith (February 29, 1860 – November 17, 1929) was an American inventor who developed an electromechanical punched card tabulator to assist in summarizing information and, later, accounting. He was the founder of the Tabulating Machine Company that was amalgamated (via stock acquisition) in 1911 with three other companies to form a fifth company, the Computing-Tabulating-Recording Company later renamed IBM. Hollerith is regarded as one of the seminal figures in the development of data processing. His invention of the punched card tabulating machine marks the beginning of the era of semiautomatic data processing systems, and his concept dominated

Title: Punched card
Content: of the 1800s Herman Hollerith invented the recording of data on a medium that could then be read by a machine. "After some initial trials with paper tape, he settled on punched cards...", developing punched card data processing technology for the 1890 US census. His tabulating machines read and summarized data stored on punched cards and they began use for government and commercial data processing. Initially, these electromechanical machines only counted holes, but by the 1920s they had units for carrying out basic arithmetic operations. Hollerith founded the "Tabulating Machine Company" (1896) which was one of four companies that were

Title: Martin Wiberg
Content: Martin Wiberg Martin Wiberg (September 4, 1826 – December 29, 1905) was born in Viby, Scania, Sweden, enrolled at Lund University in 1845 and became a Doctor of Philosophy in 1850. He is known as a computer pioneer for his c. 1859 (1857-1860) invention of a machine the size of a sewing machine that could print logarithmic tables (first interest tables appeared in 1860, logarithmic in 1875). The logarithmic tables were subsequently published in English, French and German in 1876. The device was investigated by the French academy of science which also wrote an extensive report on it in 1863.

Title: Lev Gutenmaher
Content: LEM-1 machine and in 1956, he published a scientific paper on the successful usage of matrix storage for data retention. Gutenmaher was one of the earliest computer scientists in the Soviet Union. He pioneered the usage of computers to model cognitive and linguistic processes. His research papers covered such topics as data storage and retrieval, software development, and computerized telephony. A number of his works were translated into English, German, French, and Spanish. He died in Odessa in 1981, where he had returned to in his sunset years to teach at the Odessa Polytechnic Institute. Lev Gutenmaher Lev Israilevich Gutenmaher

Question: Who invented the world's first data-processing machine?
Answer: Herman Hollerith