MEMORY 
HP34C 
RPN34 CE 
Register Arithmetic 
For STO operations only
RCL ∑+ only 
For both STO and RCL operations. Includes doubleregister ∑+ (R1 and R3) working with stack registers X and Y. 
Addressing of registers R.0…R.9 
Indirectly via I register only 
Directly, incl. arithmetic 
Registers R20…R99 
Not available 
Enabled in Settings.
Addressed indirectly via register I.
If enabled, register I is separate, not R20. 
P≷S 
Not available 
Swap primary and secondary registers 
Availability 
Shared with program memory; no registers at max. program memory size 
All registers available at all times. 



FUNCTIONS 


Hyperbolics 
Not available 
SINH, COSH, TANH and inverse 
ATAN2 
Not available 
Quadrantpreserving atan(x) 
LOGy 
Not available 
Base y log of x 
LN x! 
Not available 
Logarithm of factorial of x 
RND 
Not available 
Round x to displayed value 
MOD 
Not available 
Remainder of y/x 
ODD 
Not available 
Return 1 if x is odd 
DIV 
Not available 
Return integer part of y/x in x, remainder in y. 
CSGN 
Not available 
Generalised sign of x 
NOP 
Not available 
No operation 
ERRU 
Not available 
Programmed error stop 
TIME 
Not available 
Current time in H.MS format 
RAND 
Not available 
Create random number 
MIN 
Not available 
Return lesser of x and y in x 
INCR, DECR 
Not available 
Increment/Decrement x 
BEEP 
Not available 
Produce sound (0…9) 
EXMNT 
Not available 
Return mantissa and exp of x 
SEPx 
Not available 
Returns fractional and integer part of x 
CMAG 
Not available 
Change magnitude of y by x 
F?, SF, CF 
Flags 0…3 only 
Flags 0…9 
x≷ 
Not available 
Exchange x with any main register 
x≥y, x<y, x≥0, x≤0 
Not available 
Yes 
(see also "Top Functions" at right) 



PROGRAMMING 


Program steps 
70 with 20 registers available
210 with no registers available 
999 with 100 registers available 
Labels 
LBL 0…LBL 9, A, B 
LBL 0…LBL 9, A, B LBL.0…LBL.9 
Save, load, annotate, view, print, share programs 
Not available 
Yes 



USER INTERFACE 


Prefix keys 
Active if pressed 
Active if pressed. Deactivated if pressed again. Indicators show state. 
Register view 
Not available 
All basic registers shown on single screen including formatted display.
Run/Stop and singlestep program without leaving register view. 
Decimal Point, Thousands separator 
Fixed to "." Thousands separator shown as comma 
Userselectable representations 
Trig Mode display 
No 
Trig modes RAD and GRD show up in display 
Command display 
Not available 
In program mode or while singlestepping, current command is shown as text below display 
Current step display 
Not available 
Current program step is shown below display 
Program memory fill status 
Not available 
Red progress bar shows amount of program memory filled 