Simon (computer)
Release date | 1950 |
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Simon was a relay-based electromechanical computer, described by Edmund Berkeley in a series of thirteen construction articles in Radio-Electronics magazine, from October 1950. Intended for the educational purpose of demonstrating the concept of a digital computer, it could not be used for any significant practical computation since it had only two bits of memory. A working model was first built by two graduate students at Columbia University for less than US$300 ($3,650 in 2022 dollars) in parts.[1] Some have described it as the "first personal computer",[2] although its extremely limited capacity and its unsuitability for use for any purpose other than as an educational demonstration make that classification questionable.
History
The "Simon project" arose as a result of the Berkeley's book Giant Brains, or Machines That Think, published in November 1949. There, the author said:
We shall now consider how we can design a very simple machine that will think.. Let us call it Simon, because of its predecessor, Simple Simon... Simon is so simple and so small in fact that it could be built to fill up less space than a grocery-store box; about four cubic feet....It may seem that a simple model of a mechanical brain like Simon is of no great practical use. On the contrary, Simon has the same use in instruction as a set of simple chemical experiments has: to stimulate thinking and understanding, and to produce training and skill. A training course on mechanical brains could very well include the construction of a simple model mechanical brain, as an exercise.[3]
In November 1950, Berkeley wrote an article titled "Simple Simon" for
Some day we may even have small computers in our homes, drawing their energy from electric-power lines like refrigerators or radios ... They may recall facts for us that we would have trouble remembering. They may calculate accounts and income taxes. Schoolboys with homework may seek their help. They may even run through and list combinations of possibilities that we need to consider in making important decisions. We may find the future full of mechanical brains working about us.
Technical specifications
The Simon's
The punched tape served not only for data entry, but also as
Notes
- ^ .
- ^ What was the first personal computer? at Blinkenlights Archaeological Institute. Accessed: March 15, 2008.
- ^ Edmund Callis Berkeley (1949). Giant brains; or, Machines that think. Wiley. pp. 22, 31. Retrieved 15 January 2013.
External links
- Simon's FAQ
- Edmund Berkeley's Simon Relay Processor. Archived
- "VintageComputer.net - Simon | Mechanical Computer | Early Analog Desktop Computers 1950 | Radio-Electronics October 1950 | Edmund C. Berkeley | Robert A Jensen | Vintage Computers | First Desktop Computer". www.vintagecomputer.net.
- Edmund C. Berkeley Papers, Charles Babbage Institute, University of Minnesota. Box 22 has correspondence, memos, accounting records, and notes on the development and marketing of small robots, including Relay Moe, Franken, Tit-Tat-Toe Machine, Test Your Nerve Machine, Simon, and mechanical brain kits.