The Calculators of HP poster
![](http://4.bp.blogspot.com/_V1hky3QMM4k/R8lxJfYP4bI/AAAAAAAAAaA/ql0UCrrgTbA/s400/HpCALCS-131-678x1024.jpg)
From the The Hewlett Packard Calculator Page.
This poster shows every HP calculator made starting with the famous HP-35. Each calculator is displayed with it's production start and end data, and it's project codename.It's amazing how many of these I have actually used. This is similar to the Evolution of Apple Design...but with more buttons.
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