General > General Technical Chat
Do you still use stand-alone ("pocket") calculators?
floobydust:
How is it my 36 year old Sharp calculators will give answers in engineering units SI such as micro, milli, nano etc so I don't have to convert 0.00003 or 3e-05 to 30uA?
I looked at SpeedCrunch and didn't see it possible. It can't convert F or C either. Such rocket science.
Where is this modern tech you speak of from this century, that drives smoothly.
edit: added url
Mr Evil:
--- Quote from: floobydust on January 14, 2020, 11:41:40 pm ---How is it my 36 year old Sharp calculators will give answers in engineering units SI such as micro, milli, nano etc so I don't have to convert 0.00003 or 3e-05 to 30uA?
I looked at SpeedCrunch and didn't see it possible. It can't convert F or C either. Such rocket science.
Where is this modern tech you speak of from this century, that drives smoothly.
edit: added url
--- End quote ---
SpeedCrunch has both engineering notation and unit conversions.
rdl:
For simple, basic calculations I can't imagine why anyone would go through the hassle of using a computer if a capable calculator was within arm's reach. If it was something that couldn't be done in just a few seconds, then yeah, the computer might make sense.
floobydust:
--- Quote from: Mr Evil on January 15, 2020, 12:22:28 am ---
--- Quote from: floobydust on January 14, 2020, 11:41:40 pm ---How is it my 36 year old Sharp calculators will give answers in engineering units SI such as micro, milli, nano etc so I don't have to convert 0.00003 or 3e-05 to 30uA?
I looked at SpeedCrunch and didn't see it possible. It can't convert F or C either. Such rocket science.
Where is this modern tech you speak of from this century, that drives smoothly.
edit: added url
--- End quote ---
SpeedCrunch has both engineering notation and unit conversions.
--- End quote ---
I downloaded and tried SpeedCrunch yes it does eng units and round results. It would take some time to sort out the differences between functions, formulas and widgets.
But trying the resonance equations, I mistakenly left an extra letter "f" and it gave me a wonky answer. It seems to have used memory "f" without an operator? :(
C = 1 / (4 * pi^2 * 15.92e3f^2 * .1)
= 62.81e-15
It should be 0.1H and 1nF cap for 15.92kHz resonance. Meeehhh.
bsfeechannel:
I pretty much quit using calculators on a regular basis both at work and at home by 1995, when I had four of five of them. I switched to computer calculators, spreadsheets and, later, cellphone calculators, which I still use regularly.
But after I started watching Dave's videos, I rekindled my interest in them and now I have a small collection of vintage calculators. Some of them are on my desk and they are fun to use.
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