God only knows why HP keeps trying.
The 34C I bought as my first calculator ever was amazing
although it broke the night before a stats final and had
to be round-tripped for keyboard repairs.
The 15C I bought after getting my first job stayed with
me for 20 years as a daily friend.
My wife bought me a 12C for doing the house books on her
HP employee discount. [DISCLOSURE] My former employer was acquired by
HP so between us we have $2E8 in HP equity. We knew it
would get ugly when Agilent - the REAL HP was spun out. I
take HP's behavior very personally. You don't want my opinion
on printers after the LJ5...
I bought and sold 28S and 48GX being incapable of getting
my head really wrapped around RPL.
I replaced my 15C with a 32Sii. Until the 35Sii you'll
pry that calculator out of my dead cold fingers.
I was a first-day buyer of the 35s. It sits in a drawer.
It was worthy of a class-action lawsuit. Missing P<>R was
a major tip-off but it's a freaking hive.
I was a first-day buyer of two (2) 15CSE, one for me and
one for my son. They sit in a drawer - what the hell kind
of fun is keystroke programming on a machine that can't PSE?!
After the 15CSE thing I swore I'd not buy another HP calculator.
I replaced my son's 15CSE with an NSpire (what a pig that is).
After working some of his homework with him I bought a 84+C:
McGraw Hill gives problem solving in TI keystrokes. The NSpire
has it's 84 pad installed full time. I bought the C because I
can't really see LCD's any more. I promptly bought the white
keypad overlay so that I could read the shifted legends.
My desktop at work sports a Canon F-792SGA. Bases, complex, vectors,
stats in 1/2 variables with distributions and confidence
intervals, matrix ops, solve, integrate, 4x4 linear equations,
exact math
and on and on. $5.99.
As for Prime - I bought one on DAY ONE.
1. it was made available after BTS shopping season. I took
this as a clue that HP intends to start marketing this for
school use in the spring. Until it's end-capped at Staples,
Best Buy and Walmart it's not a contender. When you see it
there, it means that HP is ready to *crush* the 84/nspire/89.
2. it's field upgradable. Combined with 1. and the horror
shows of earlier devices I assumed that if they didn't mess
up the mechanicals they'd be working with the various calc
geek and educational communities and pumping out updates fortnightly. Eventually
we'd get a calculator that works and they'd fling the doors
wide for mass-sales for *next* school year.
My experience:
- I can't read the legends on the number keys. I have 20/20
but unless I point a flashlight at it, it's illegible. So,
no - they did not get the mechanicals right.
- as you can tell from above, I'm an RPN-only guy. I'm eager
to see the RPN issues fixed before I go very deep on this
machine
- I'm very surprised that they left so much 28/48/50 DNA behind
but it's not too late. More of that can come as the core
calculator is reworked for better RPN support
- I bought a 50g this week. Looks like I'll be keeping an LED
headband with my calculators... how geeky is that?
- I'm amazed that the 'apps' appear to be written to the calc
substrate, not a lower-level ARM API.
-- How cool would it be to have Graffiti in all apps?
-- How about an app that's pretty much the whole Palm stack?
-- How about Squeak/Scratch/Alice? Scheme instead of RPL...
-- How about a working 35s/RPN keystroker as an APP?
So far I'm cautiously hopeful. At the moment it's hard to judge
until the next update for RPN support. The will need to be a
mechanical update because the colors are illegible.
The only tragedy would be HP getting all nSpire on the thing
and trying to lock us out.