| General > General Technical Chat |
| Do you still use stand-alone ("pocket") calculators? |
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| chickenHeadKnob:
--- Quote from: IanJ on January 20, 2020, 12:12:22 pm --- --- Quote from: blacksheeplogic on January 15, 2020, 05:07:13 am ---My wife has found and 'put away' a lot of my calculators and no doubt she will eventually find these as well..... (Attachment Link) --- End quote --- Oooh, you have an EL-5155.......I have 2off EL-545 which use daily at work and in the workshop at home. Not sure the difference but physically identical just about. Ian. --- End quote --- When Blacksheeplogic presented his collection my first thought was: " erm, that lad has issues", then I noticed the basic scientific sharp and thought " no he will be alright". I have a EL-540D in my desk drawer, purchased 1985. Last calculator of the hand I will ever buy. I extract and use maybe once every three months. 10 digits non-programmable should be sufficient for anyone. |
| smithnerd:
--- Quote from: Mortymore on January 19, 2020, 12:03:23 am --- Integral of ln(x^2)dx, from -5 to 99 (EDIT: as can be seen in the photo, on Casio FX-991ES display) Casio FX-991ES -------- 3m15s -------------- 717.9281095 --- End quote --- My FX-991ES does it in 2m56s - I must have an overachiever (or different ROM). My older FX-991W (c2000) does it in 1m28s, but rounds the result up to 718. |
| Cnoob:
I use a HP prime, 2 reasons, it has a nice clear display and it displays your equation so you can check if you made a mistake. I do use windows 10 calculator mostly for conversions. |
| george.b:
--- Quote from: Mortymore on January 19, 2020, 12:03:23 am ---Integral of ln(x^2)dx, from -5 to 99 (EDIT: as can be seen in the photo, on Casio FX-991ES display) Casio FX-991ES -------- 3m15s -------------- 717.9281095 HP 39G II ---------------- 7s ------------------- 717.928109451 HP 49G+ ----------------- 25m 38s ----------- 717.928325369 HP 40GS ----------------- 20m48s ------------ 717.928325369 HP 49G ------------------ 54m54s ------------- 717.928325369 HP 48G -------------- was not able to solve Microsoft Mathematics on a i5 ---- 0s ------ 717.9281094509898 --- End quote --- My HP 48G+ finished it, took a long time (sorry, didn't measure it), but it arrived to a result of 717.928325369. |
| Messtechniker:
Still going strong - except for batteries of course - is my Texas Instruments SR-56. 8) Use it now occasionally to work out decibels :-+ My father bought it when it was new in the USA. Was quite a sensation at the time in Germany. Used it to do physics homework in no time, because math tasks had been set up with the intention of using a slide rule. Nowadays: :scared: This was eventually changed. Thankfully after having completed my studies. :-+ |
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