Hanimex SPC 1090

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: 5½"×3"×½" Display size: 10(8+2) digits
Weight: 4 oz    
    Entry method: Algebraic with precedence 
Batteries: 2×"LR44" button cell Advanced functions: Trig Exp Hyp Lreg Cmem BaseN Units 
External power:   Memory functions:
    Programming model: Partially merged keystroke 
Precision: 11 digits Program functions: Jump Cond  
Memories: 7 numbers Program display:  
Program memory: 45 program steps Program editing:  
Chipset: Kinpo   Forensic result:  

spc1090.jpg (25078 bytes)My first ever Hanimex programmable, sent to me by a fellow calculator enthusiast, turned out to be a close relative to another recently acquired machine, the Citizen SR-59. Since Hanimex is a known OEM label, it is an easy guess that this machine was probably made by Citizen; this suspicion is reinforced by the fact that the manual calls the machine a PSR-98, which is very much like a Citizen model number.

Like the SR-59, the SPC 1090 has a 45-step program memory, divided into two program areas. Another similarity is the way conditional and unconditional transfers are implemented, as relative jumps within plus or minus 9 program steps of the current program location.

The program example I wrote for the SR-59, an implementation of the incomplete Gamma function, runs well on this machine also. The program is relisted here, using the keyboard mnemonics of the SPC 1090, which are slightly different from the SR-59's mnemonics.

To use this program, enter the integration limit, his MIN, then enter the argument, and hit RUN1. For instance, if you type 30 MIN .5 RUN1, after a couple of minutes (yes, the iteration takes a little time) the square root of pi should appear on the display, which of course is none other but the Gamma function of 0.5.

01:  STO
02:  2
03:  MR
04:  STO
05:  1
06:  yx
07:  RCL
08:  2
09:  ÷
10:  RCL
11:  1
12:  ex
13:  ÷
14:  RCL
15:  2
16:  =
17:  STO
18:  3
19:  MIN
20:  RCL
21:  3
22:  ×
23:  RCL
24:  1
25:  ÷
26:  (
27:  GOTO 1
28:  GOTO -9
29:  RCL
30:  2
31:  +
32:  1
33:  )
34:  STO
35:  2
36:  GOTO 1
37:  GOTO -9
38:  +
39:  STO
40:  3
41:  MR
42:  =
43:  x<=M 1
44:  GOTO -7
45:  MR