This is how I was introduced to the engineering. My very fist log rule and my HP-21 scientific calculator (successor of the famous HP-35)
REF:
[1] Slide rule: https://en.wikipedia.org/wiki/Slide_rule
[2] HP-21 scientific calculator: https://en.wikipedia.org/wiki/HP-21
1 comment:
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Consumer Electronics,Consumer Electronics in UAE,consumer electronics products
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