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Early Computers

The following are the ones I can think of.  Of course I am only familiar with the ones on the West Coast plus the first computer in the US.

Information for these pages was derived from or copied from the Annals of the History of Computing

BINAC - Binary Automatic Computer
The first stored program operating computer in the United States which was developed by John William Mauchly and John Presper Eckert, Jr.  After ENIAC, the two started the Echert-Mauchly company and contracted with Northrop Aircraft Company to build a scientific digital computer, BINAC.

Card Programmed Calculator (CPC)
The CPC was made up of three units: a 605, a 417, and a 941. The first two were modifications of the 604 calculator and the 402 accounting machine, respectively, and the 941 was a special box containing 480 digits of additional storage using the same type of electromechanical storage used in the 417. Programs were punched into IBM cards, fed through the reader unit of the 417, with the mathematics performed by the 605, the intermediate results stored in the 605 or 941, and final results punched into cards in the 605's punch unit, or printed by the 417 print unit.

EDVAC - Electronic Discrete Variable Computer

ENIAC - Electronic Numerical Integrator and Computer
The first electronic digital computer in the United States.

IBM 650 - Magnetic Drum Calculator
The IBM Magnetic Drum Calculator was a numeric decimal machine.

IBM 701 - Defense Calculator
The IBM 701 was a stored program computer with a large capacity high speed electrostatic storage, intermediate magnetic drum storage, magnetic tape units and fast computing speed.

IBM 704
The IBM 704 was the first large scale commercially available stored program computer to employ fully automatic floating point arithmetic commands and index registers.

JOHNNIAC
In 1950 Rand needed to increase its computing power significantly over what it obtained from IBM Card Programmed Calculators. After surveying commercial and university projects, Rand decided to build an improved version of the machine being constructed under the leadership of John von Neumann at the Institute for Advanced Study in Princeton. It was to be caned JOHNNIAC. By the time Shaw was installing JOSS I on the JOHNNIAC, the machine had 4096 words (40 bits each) of core storage with a cycle time of 15 microseconds, drum storage of 12,288 words, punched card input/output, and a high speed printer. It had no magnetic tapes, no indexing, and no built-in floating point.

JOSS - JOHNNIAC Open Shop System
Developed by RAND using the JOHNNIAC, JOSS (the first truly simple on-line system) JOSS was a milestone in the history of conversational timesharing.

MADDIDA - Magnetic Digital Differential Analyzer
Developed by Northrop Aircraft, MADDIDA was the first electronic digital differential analyzer.

SAGE - Semi-Automatic Ground Environment
The SAGE system was the first large operating program to be developed.

SWAC - National Bureau of Standards Western Automatic Computer
SWAC was a parallel computer using Williams tube memory.

UNIVAC - Universal Automatic Computer

UNIVAC 1103

UNIVAC 1103A