Privileg SR-12PR

Datasheet legend
Ab/c: Fractions calculation
AC: Alternating current
BaseN: Number base calculations
Card: Magnetic card storage
Cmem: Continuous memory
Cond: Conditional execution
Const: Scientific constants
Cplx: Complex number arithmetic
DC: Direct current
Eqlib: Equation library
Exp: Exponential/logarithmic functions
Fin: Financial functions
Grph: Graphing capability
Hyp: Hyperbolic functions
Ind: Indirect addressing
Intg: Numerical integration
Jump: Unconditional jump (GOTO)
Lbl: Program labels
LCD: Liquid Crystal Display
LED: Light-Emitting Diode
Li-ion: Lithium-ion rechargeable battery
Lreg: Linear regression (2-variable statistics)
mA: Milliamperes of current
Mtrx: Matrix support
NiCd: Nickel-Cadmium rechargeable battery
NiMH: Nickel-metal-hydrite rechargeable battery
Prnt: Printer
RTC: Real-time clock
Sdev: Standard deviation (1-variable statistics)
Solv: Equation solver
Subr: Subroutine call capability
Symb: Symbolic computing
Tape: Magnetic tape storage
Trig: Trigonometric functions
Units: Unit conversions
VAC: Volts AC
VDC: Volts DC
Years of production:   Display type: Numeric display  
New price:   Display color: Black  
    Display technology: Liquid crystal display 
Size: 3½"×5½"×½" Display size: 10+2 digits
Weight: 4 oz    
    Entry method: Algebraic with precedence 
Batteries: 2×"V389" button cell Advanced functions: Trig Exp Hyp Lreg Ab/c Cmem BaseN Units Const 
External power:   Memory functions: +/-/×/÷/^ 
    Programming model: Partially merged keystroke 
Precision: 12 digits Program functions: Jump Cond  
Memories: 10 numbers Program display:  
Program memory: 128 program steps Program editing:  
Chipset: Canon F-802P   Forensic result: 8.99999863604  

sr12pr.jpg (34314 bytes)Privileg, the store brand of the German store chain Quelle, offered many interesting calculators over the years. Like Radio Shack/Tandy in North America, Privileg repackaged a variety of calculator models under its own OEM brand. In fact, next to Radio Shack, Privileg is probably the second most prolific OEM brand of programmable calculators.

The SR-12PR is Privileg's model number for a popular scientific calculator also known as the Citizen SRP-175 or the Canon F-800P. A true multifunction scientific model, the SR-12PR does just about everything you'd want from a decent engineering tool, with one huge exception: it is not possible to view/edit programs in its 128-step program memory, making program entry and modification needlessly difficult.

One clumsy feature of these machines' programming model is the way jump instructions are implemented: they only let you skip up to 9 program steps, forward or backward, in program memory. If your program requires that you skip over more steps, which is often the case, repeated use of GOTO is necessary. This is well illustrated in the following programming example, which computes the incomplete Gamma function. (To use this program, first place the integration limit in register 0, then enter the argument, and hit RUN 6):

01:  STO
02:  2
03:  RCL
04:  0
05:  STO
06:  1
07:  yx
08:  RCL
09:  2
10:  ÷
11:  RCL
12:  1
13:  ex
14:  ÷
15:  RCL
16:  2
17:  =
18:  STO
19:  3
20:  STO
21:  0
22:  1
23:  STO
24:  +
25:  2
26:  RCL
27:  1
28:  GOTO 1
29:  GOTO -9
30:  ÷
31:  RCL
32:  2
33:  ×
34:  RCL
35:  3
36:  GOTO 1
37:  GOTO -8
38:  +
39:  STO
40:  3
41:  RCL
42:  0
43:  =
44:  x<=M 1
45:  GOTO -8
46:  RCL
47:  1
48:  x<->M