Topic: Computing/Early computers (Page 2)

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🔗 MONIAC – Monetary National Income Analogue Computer

🔗 Computing 🔗 Economics 🔗 Computing/Early computers

The MONIAC (Monetary National Income Analogue Computer) also known as the Phillips Hydraulic Computer and the Financephalograph, was created in 1949 by the New Zealand economist Bill Phillips (William Phillips) to model the national economic processes of the United Kingdom, while Phillips was a student at the London School of Economics (LSE). The MONIAC was an analogue computer which used fluidic logic to model the workings of an economy. The MONIAC name may have been suggested by an association of money and ENIAC, an early electronic digital computer.

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🔗 Father of the PDP-1: The TX-0, Transistorized EXperimental Computer Zero (1956)

🔗 Computing 🔗 Computing/Early computers

The TX-0, for Transistorized Experimental computer zero, but affectionately referred to as tixo (pronounced "tix oh"), was an early fully transistorized computer and contained a then-huge 64K of 18-bit words of magnetic core memory. Construction of the TX-0 began in 1955 and ended in 1956. It was used continually through the 1960s at MIT. The TX-0 incorporated around 3600 Philco high-frequency surface-barrier transistors, the first transistor suitable for high-speed computers. The TX-0 and its direct descendant, the original PDP-1, were platforms for pioneering computer research and the development of what would later be called computer "hacker" culture.

🔗 Atanasoff–Berry Computer

🔗 United States 🔗 Computing 🔗 Computing/Computer hardware 🔗 Computing/Early computers 🔗 United States/Iowa

The Atanasoff–Berry computer (ABC) was the first automatic electronic digital computer. Limited by the technology of the day, and execution, the device has remained somewhat obscure. The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete. Conventionally, the ABC would be considered the first electronic ALU (arithmetic logic unit) – which is integrated into every modern processor's design.

Its unique contribution was to make computing faster by being the first to use vacuum tubes to do the arithmetic calculations. Prior to this, slower electro-mechanical methods were used by Konrad Zuse's Z1, and the simultaneously developed Harvard Mark I. The first electronic, programmable, digital machine, the Colossus computer from 1943 to 1945, used similar tube-based technology as ABC.

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🔗 Water Based Analog Computer

🔗 Technology 🔗 Computing 🔗 Computing/Early computers

The Water Integrator (Russian: Гидравлический интегратор) was an early analog computer built in the Soviet Union in 1936 by Vladimir Sergeevich Lukyanov. It functioned by careful manipulation of water through a room full of interconnected pipes and pumps. The water level in various chambers (with precision to fractions of a millimeter) represented stored numbers, and the rate of flow between them represented mathematical operations. This machine was capable of solving inhomogeneous differential equations.

The first versions of Lukyanov's integrators were rather experimental, made of tin and glass tubes, and each integrator could be used to solve only one problem. In the 1930s it was the only computer in the Soviet Union for solving partial differential equations.

In 1941, Lukyanov created a hydraulic integrator of modular design, which made it possible to assemble a machine for solving various problems. Two-dimensional and three-dimensional hydraulic integrators were designed.

In 1949–1955, an integrator in the form of standard unified units was developed at the NIISCHETMASH Institute. In 1955, the Ryazan plant of calculating and analytical machines began the serial production of integrators with the factory brand name “IGL” (russian: Интегратор Гидравлический Лукьянова - integrator of the Lukyanov hydraulic system). Integrators were widely distributed, delivered to Czechoslovakia, Poland, Bulgaria and China.

A water integrator was used in the design of the Karakum Canal in the 1940s, and the construction of the Baikal–Amur Mainline in the 1970s. Water analog computers were used in the Soviet Union until the 1980s for large-scale modelling. They were used in geology, mine construction, metallurgy, rocket production and other fields.

Currently, two hydraulic integrators are kept in the Polytechnic Museum in Moscow.

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🔗 Whirlwind I

🔗 Computing 🔗 Military history 🔗 Military history/North American military history 🔗 Military history/United States military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/Cold War 🔗 Computing/Early computers

Whirlwind I was a Cold War-era vacuum tube computer developed by the MIT Servomechanisms Laboratory for the U.S. Navy. Operational in 1951, it was among the first digital electronic computers that operated in real-time for output, and the first that was not simply an electronic replacement of older mechanical systems.

It was one of the first computers to calculate in bit-parallel (rather than bit-serial), and was the first to use magnetic-core memory.

Its development led directly to the Whirlwind II design used as the basis for the United States Air Force SAGE air defense system, and indirectly to almost all business computers and minicomputers in the 1960s, particularly because of the mantra "short word length, speed, people."

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🔗 Mailüfterl (Early Transistorized Computer)

🔗 Computing 🔗 Computing/Early computers

Mailüfterl is a nickname for the Austrian Binär dezimaler Volltransistor-Rechenautomat (binary-decimal fully transistorized computing automaton), an early transistorized computer. Other early transistorized computers included TRADIC, Harwell CADET and TX-0.

Mailüfterl was built from May 1956 to May 1958 at the Vienna University of Technology by Heinz Zemanek.

Heinz Zemanek had come to an agreement with Konrad Zuse, whose company Zuse KG would finance the work of Rudolf Bodo, who helped build the Mailüfterl, also that all circuit diagrams of the Z22 were supplied to Bodo and Zemanek, and that after the Mailüfterl project Bodo should work for the Zuse KG to help build the transistorized Z23.

The first program, computation of the prime 5,073,548,261, was executed in May 1958. Completion of the software continued until 1961. The nickname was coined by Zemanek: "Even if it cannot match the rapid calculation speed of American models called 'Whirlwind' or 'Typhoon', it will be enough for a 'Wiener Mailüfterl'" (Viennese May breeze).

The computer has 3,000 transistors, 5,000 diodes, 1,000 assembly platelets, 100,000 solder joints, 15,000 resistors, 5,000 capacitors and about 20,000 metres (66,000 ft) of wire. It is 4 meters (13 ft) wide, 2.5 meters (8.2 ft) high, and 50 centimeters (20 in) deep. The machine was comparable in calculating power to what were then considered small vacuum-tube computers. Calculations and representation of values worked using the BCD system.

Zemanek later said about his project that it was a "semi-illegal" undertaking of an assistant professor, which he and a group of students realized without official authorization, and hence without financial support, from the university. In 1954 he traveled to Philips in the Netherlands, where he asked for a donation in kind. Transistors, invented seven years before and just beginning to be available commercially, were very difficult to obtain in quantity at any price, but Zemanek received a commitment for 1,000 rather slow hearing-aid transistors, and Philips finally shipped a total of 4,000 high-quality transistors to the Austrians.

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🔗 Jon Postel

🔗 Biography 🔗 Internet 🔗 Computing 🔗 Computer science 🔗 Biography/science and academia 🔗 Computing/Computer science 🔗 Computing/Early computers 🔗 Computing/Networking

Jonathan Bruce Postel (; August 6, 1943 – October 16, 1998) was an American computer scientist who made many significant contributions to the development of the Internet, particularly with respect to standards. He is known principally for being the Editor of the Request for Comment (RFC) document series, for Simple Mail Transfer Protocol (SMTP), and for administering the Internet Assigned Numbers Authority (IANA) until his death. In his lifetime he was known as the "god of the Internet" for his comprehensive influence on the medium.

The Internet Society's Postel Award is named in his honor, as is the Postel Center at Information Sciences Institute, University of Southern California. His obituary was written by Vint Cerf and published as RFC 2468 in remembrance of Postel and his work. In 2012, Postel was inducted into the Internet Hall of Fame by the Internet Society. The Channel Islands' Domain Registry building was named after him in early 2016.

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