Search results
Results from the WOW.Com Content Network
The history of computing hardware spans the developments from early devices used for simple calculations to today's complex computers, encompassing advancements in both analog and digital technology. The first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic ...
This was a specialized counting machine used for cipher-breaking, not a general-purpose calculator or computer, but a logic device using a combination of electronics and relay logic. It read data optically at 2000 characters per second from two closed loops of paper tape. It was significant as it was the forerunner of Colossus.
Babbage's devices could be reprogrammed to solve new problems by the entry of new data and act upon previous calculations within the same series of instructions. Ada Lovelace took this concept one step further, by creating a program for the Analytical Engine to calculate Bernoulli numbers, a complex calculation requiring a recursive algorithm ...
The 19th century also saw the designs of Charles Babbage calculating machines, first with his difference engine, started in 1822, which was the first automatic calculator since it continuously used the results of the previous operation for the next one, and second with his analytical engine, which was the first programmable calculator, using ...
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [2] and completed in 1694). [1]
The Comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr Felt in 1887.. A key-driven calculator is extremely fast because each key adds or subtracts its value to the accumulator as soon as it is pressed and a skilled operator can enter all of the digits of a number simultaneously, using as many fingers as required, making ...
A working MOSFET is built by a team at Bell Labs. E. E. LaBate and E. I. Povilonis made the device; M. O. Thurston, L. A. D’Asaro, and J. R. Ligenza developed the diffusion processes, and H. K. Gummel and R. Lindner characterized the device. [12] [13] 1960: US EUR ALGOL, first structured, procedural, programming language to be released. 1960: UK
This is a list of early microcomputers sold to hobbyists and developers. These microcomputers were often sold as " DIY " kits or pre-built machines in relatively small numbers in the mid-1970s. These systems were primarily used for teaching the use of microprocessors and supporting peripheral devices, and unlike home computers were rarely used ...