![HP41c[1]](https://dayintechhistory.com/wp-content/uploads/2012/10/HP41c1-340x250.jpg "HP41c[1]")
October 4, 1979: HP 41c Programmable Calculator
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Hewlett Packard came out with their first Programmable calculator in 1979. The HP-41c was the first to give alphanumeric display capabilities. It would actually tell you what to do (ex. “ENTER RADIUS”) instead of leaving your wondering. It also had four ports that could be used to expand memory, install a Thermal printer, magnetic reader or bar code scanner.
2011 – Apple Announces the iPhone 4s, with retina display and Siri functionality. The 4s contains the A5 chipset and would be on sale October 10th. Apple also announced iOS5 update, which would be available on October 12th.
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