I can remember seeing my dad reaching for his slide rule. A device which I never did figure out how to use. :lol: Jim
I bet it was a linear slide rule - which are nice amusements for children. When I first started in a shipyard in the 1970s, we were dead modern and used overnight batch computer runs from punched cards, but we still had a backup in the office - a cylindrical slide rule that would work to four significant figures - the equivalent of a linear slide rule several tens of feet long. It was about the size of one scroll of a Torah and was treated with even greater reverence, being worth an absolute fortune. The photo shows a similar one.
My Dad taught me how to use his. Then he promptly pulled out his HP enginnering calculator and said, "Now, why the hell you would want to use a slide rule when you have a calculator is beyond me. However, at least you know how to use one."
My first HP calculator.....HP-25 Cost me almost $200 my first year of college. Did my first computer programming using Fortran on punch cards and paid for computer time by the minute while at school.......
My high school history teacher used to yell at me for playing Tetris in class on my calculator. Can't do that on a slide rule, now can you?
Hah..... I've been using the same HP-10C programable calculator for the last 30 years and it's still going strong.
Funny...I noticed the same with my MINI...just seems to like SHELL gas better than most other brands.
I buy gas at Costco, Shell, Chevron and Union 76, I don't notice any difference in the way it runs or in the gas mileage, with any of those brands. All the pumps say the same thing, 92 octane, not more than 10% ethanol. And they all have their own version of techron in the gas Dave