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2. Adding machine - Wikipedia

   en.wikipedia.org/wiki/Adding_machine

   Adding machine for the Australian pound c.1910, note the complement numbering, and the columns set up for shillings and pence. An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. In the United States, the earliest adding machines were usually built to read in dollars and cents.

3. Canon Production Printing - Wikipedia

   en.wikipedia.org/wiki/Canon_Production_Printing

   Canon Production Printing, known as Océ until the end of 2019, [2] is a Netherlands-based subset of Canon that develops, manufactures and sells printing and copying hardware and related software. The product line includes office printing and copying machinery, production printers, and wide-format printers for both technical documentation and ...

4. Joseph Boyer - Wikipedia

   en.wikipedia.org/wiki/Joseph_Boyer

   He helped William Seward Burroughs I develop the adding machine and was the inventor of the first successful rivet gun. As the third president of the American Arithmometer Company , in the first of a series of business moves designed to eliminate the competition, in 1903 he secretly agreed to acquire the Addograph Manufacturing Company . [ 3 ]

5. American Arithmometer Company - Wikipedia

   en.wikipedia.org/wiki/American_Arithmometer_Company

   Unlike Burroughs, these competing machines had "visible" printers that printed in view of the operator. Pike, Universal, and Wales machines had full keyboards like the machines produced by Burroughs. By contrast, Dalton Adding Machine and the Standard Adding Machine Company had more modern ten-key keyboards. [6]

6. 13 Vintage Cameras That Are Now Collector’s Treasures

   www.aol.com/13-vintage-cameras-now-collector...

   Canon AE-1. eBay. This camera was the very first SLR to feature a microprocessor. With an automatic exposure mode, it’s known for being incredibly easy for amateur photographers to use.

7. Printer tracking dots - Wikipedia

   en.wikipedia.org/wiki/Printer_tracking_dots

   Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was used to print the document.