Question

what is ENIAC,EDVAC AND UNIVAC ?​

Answer 1

ENIAC (Electronic Numerical Integrator And Computer) was the first general purpose computer. It was invented by J. Presper Eckert and John Mauchly. It was primarily designed, and used, to calculate artillery tables for the Army, it was also used to study the feasibility of thermonuclear bombs. It was programmed with with hard-wired function tables that each had 1200 10-way switches. It could also receive input from IBM punch cards, and used an IBM card punch for output, which could then be sent to an IBM accounting machine to be printed. It was octal based, rather than binary.

EDVAC (Electronic Discrete Variable Automatic Computer) was the successor to ENIAC, was binary based, and used stored programs, and was also designed by Eckert and Mauchly,

heya...

UNIVAC, in full Universal Automatic Computer, one of the earliest commercial computers.

After leaving the Moore School of Electrical Engineering at the University of Pennsylvania, J. Presper Eckert, Jr., and John Mauchly, who had worked on the engineering design of the ENIAC computer for the United States during World War II, struggled to obtain capital to build their latest design, a computer they called the Universal Automatic Computer, or UNIVAC.

In the meantime, they contracted with the Northrop Corporation to build the Binary Automatic Computer, or BINAC, which, when completed in 1949, became the first American stored-program computer. The partners delivered the first UNIVAC to the U.S. Bureau of the Census in March 1951, although their company, their patents, and their talents had been acquired by Remington Rand, Inc., in 1950. Although it owed something to experience with ENIAC, UNIVAC was built from the start as a stored-program computer, so it was very different architecturally. It used an operator keyboard and console typewriter for simple, or limited, input and magnetic tape for all other input and output. Printed output was recorded on tape and then printed by a separate tape printer.

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Answer 2

a) ENIAC - Electronic Numerical Integrator And Computer

The first general purpose computer. It was invented by J. Presper Eckert and John Mauchly.

b) UNIVAC - Universal Automatic Computer

The first commercial computer. It was designed by the same two men who designed ENIAC and EDVAC.

c) EDVAC - EDVAC Electronic Discrete Variable Automatic Computer

the successor to ENIAC, was binary based, and used stored programs, and was also designed by Eckert and Mauchly.