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The Abacus is thought to be the first ever "computing" device ever. It is made up of rows of beads and until 1642, was the main way to compute two numbers. https://school.eb.com/levels/middle/article/computer/273764#199044-toc -
The first Mechanical Calculator was invented by french scientist Blaise Pascal. The device was made of wheels and cogs that would spin each time the first wheel would spin ten times, the next would spin once. https://school.eb.com/levels/middle/article/computer/273764#199044-toc -
The Idea of the Modern Computer was thought of by British Mathematician Charles Babbage. The design was composed of modern elements of todays computers including, input and output devices and other parts like storage and the control unit. https://school.eb.com/levels/middle/article/computer/273764 -
The Tabulator was invented by American inventor Herman Hollerith in 1885. The Tabulator worked by taking two or more cards and finding and keeping in track of where the patterns/numbers overlap. In 1890, multiple Tabulators were used to help count for that years census. https://school.eb.com/levels/middle/article/computer/273764 -
The Analog Computer was invented by American Inventor Vannevar Bush in 1920 This was the first calculator to be capable of calculating advanced math problems. https://school.eb.com/levels/middle/article/computer/273764 -
Claude Shannon invented digital circuit theory which launched the abiltiy to make images pop up on screens and allowed for modern computers like todays to thrive. https://www.factcite.com/useh/4000662full.html -
The ABC Computer was invented by John T. Antansoff and Clifford Berry in 1942. This Computer used 1's and 0's instead of decimals to transmit signals easier. https://school.eb.com/levels/middle/article/computer/273764 -
The ENIAC was invented by John. W. Mauchly and J. Presper Eckert jr. in 1946. The ENIAC was a hefty 18 tons and contained 500 miles of wiring that preformed 5,000 calculations per second https://school.eb.com/levels/middle/article/computer/273764 -
Alan Kay is credited with the invention of the modern computer but this device never made it into mass production. https://www.britannica.com/technology/laptop-computer -
This would be a laptop where you connected something to your head and them you could telepathicly search and watch things on your laptop