The HP 35s is finally announced! I've been using it for months and really like this new model.

On the HP 35s webpage found at www.hp.com/calculators, there are 55 learning modules for your download.

HPCC.org has graciously put up a link to my review of the HP 35s that appears in their special HP 35s Datafile issue which you can read/download on their website here:

http://www.hpcc.org/datafile/V26Special/the35s.pdf

Be sure to check out the review and all the other goodies in the special HP 35s issue of Datafile. Join now! :-)

Highlights of the HP 35s:

** Two index registers, regular variables I and J. Dedicated i register is gone.

** 801 indirect registers plus 32 other registers (A through Z and stat registers).

** Indirect registers dynamically allocated based on highest non-zero value containing indirect register.

** Each indirect register allocated uses 37 bytes of available program memory.

** Index values of 0 through 800 reference the indirect registers.

** Index values of -1 to -26 reference A through Z.

** Index values of -27 to -32 access stat registers.

** The index registers are no longer in the middle of the address space as on the 33s.

** 26 global labels with dynamic line number GTO and XEQ instructions.

** Transfer execution to any line number within any program.

** Add / delete a step and the GTO/XEQ instructions renumber themselves appropriately.

** They keep pointing where you want them to point.

** Programs "limited" to 999 lines per label now. A001 through A999, B001 through B999, etc.

** Since each program line uses at least 3 bytes, 1000 lines equals 3000 bytes. 26 labels x 3000 bytes is more than available memory.

** 20 subroutine levels now available.

** The stack can hold 4 full complex numbers.

** 2-D and 3-D vectors as a new data type.

** The stack can hold 4 vectors, 2-D or 3-D.

** No direct P->R or R->P conversions. Change display mode instead. Polar parts can be separated.

** Equations no longer limited to 255 characters.

** Ability for non-destructive editing of equations using left

cursor.

** New LOGIC functions work on base-N numbers. OR, NOR, NOT, AND, XOR, NAND

** Algebraic mode equation/stack "tricks" work in RPN mode providing very useful stack methods.

** A program line of REGTxREGZxREGYxREGX will find the product of all four stack registers and store the result in X. Only T would be lost.

** If you roll the stack down, the program line of REGTx2 will double the value previously in X without losing any stack levels.

** Learning module available allowing for 2400 real numbers to be stored/recalled in indirect registers using 3-D vectors. Stack is preserved by this program. Shows many techniques for creating, modifying values in vectors and the indirect registers.

** Datafile article available showing program for translated PPC ROM matrix utilities programs M1, M2, M3, M4, M5 along with BE and BX. All that is needed now to find the determinant of a 28x28 matrix or the inverse of an 18x18 matrix is the equivalent RRM style program. (Yes, I've been working on one but it isn't finished yet!)

** Algebraic mode now operates much more like an equation operating system than the HP 33s algebraic mode did.

** Key a long calculation in ALG mode and press ENTER. To go back and revise one part of that calculation, press the left cursor key, go back and make your change, then press ENTER again.

For more, read the review!

Gene

*Edited: 12 July 2007, 5:43 p.m. after one or more responses were posted*