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HP-28S: Key press problem
06-30-2016, 10:58 AM
Post: #9
RE: HP-28S: Key press problem
(06-28-2016 11:56 PM)JDW Wrote:  ...

But in my case, I didn't buy my 28S off EBAY. It was a purchase through my university bookstore back in early 1990.

...

I also purchased my 28S at university. I used it for many years until a few years ago when the battery door just wouldn't hold on anymore.

My personal suggestion for a replacement is to go for the 50g. It takes a bit of getting used to, but has the same stack and programming model as the 28 (RPL).

A 48G series would be the next recommendation, but the 50g is faster, has a bigger screen and has more features (e.g. MDG Metakernel is built-in).

Trying the 42S was frustrating for me:
- stack is limited to 4 levels (frustrating once you're used to the "unlimited" 28/48/50 stack)
- stack lift works differently than 28/48/50 series
- essentially key-stroke programming (and added to that, stack-lift works differently in programs than in normal calculation).

I purchased a 42S but sold it again as I felt it was not worth the investment as I only ended up using it for quick calculations and found a cheaper 32s was just as useful. I do use Free42 for on-screen calculations.

I have since bought a very good condition 28S off eBay, but have not gone back to it. The 50g is my main work horse. I use a 32s just for quick calculations because it is smaller & lighter (I am keeping an eye on the DM42 to replace the aging 32s).


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Messages In This Thread
HP-28S: Key press problem - JDW - 06-28-2016, 04:24 AM
RE: HP-28S: Key press problem - damaltor - 06-28-2016, 06:33 AM
RE: HP-28S: Key press problem - JDW - 06-28-2016, 06:55 AM
RE: HP-28S: Key press problem - damaltor - 06-28-2016, 04:38 PM
RE: HP-28S: Key press problem - JDW - 06-28-2016, 11:56 PM
RE: HP-28S: Key press problem - Marcio - 06-29-2016, 12:16 AM
RE: HP-28S: Key press problem - JDW - 06-29-2016, 01:52 AM
RE: HP-28S: Key press problem - Marcio - 06-29-2016, 02:40 AM
RE: HP-28S: Key press problem - BartDB - 06-30-2016 10:58 AM
RE: HP-28S: Key press problem - Marcio - 06-30-2016, 11:51 AM
RE: HP-28S: Key press problem - grsbanks - 07-26-2017, 03:40 PM
RE: HP-28S: Key press problem - JDW - 06-30-2016, 12:02 PM
RE: HP-28S: Key press problem - BartDB - 06-30-2016, 01:42 PM
RE: HP-28S: Key press problem - rprosperi - 06-30-2016, 01:58 PM
RE: HP-28S: Key press problem - damaltor - 06-30-2016, 06:55 PM
RE: HP-28S: Key press problem - JDW - 06-30-2016, 11:56 PM
RE: HP-28S: Key press problem - rprosperi - 07-01-2016, 02:03 AM
RE: HP-28S: Key press problem - damaltor - 07-02-2016, 04:20 PM
RE: HP-28S: Key press problem - Jlouis - 07-25-2017, 01:48 AM
RE: HP-28S: Key press problem - rprosperi - 07-25-2017, 03:54 PM
RE: HP-28S: Key press problem - beerlim - 07-24-2017, 10:58 AM
RE: HP-28S: Key press problem - Jlouis - 07-25-2017, 01:36 AM
RE: HP-28S: Key press problem - beerlim - 07-25-2017, 04:45 AM



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