Elektronika MK-54

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: 1983-1985 Display type: Numeric display  
New price: SUR 65.00   Display color: Green  
    Display technology: Vacuum fluorescent display 
Size: 6½"×3"×1½" Display size: 8+2 digits
Weight: 8 oz    
    Entry method: Reverse Polish Notation 
Batteries: 3×"AA" alkaline Advanced functions: Trig Exp 
External power: D2-10M adapter (5VDC 0.1A)   Memory functions:  
I/O:      
    Programming model: Partially merged keystroke 
Precision: 8 digits Program functions: Jump Cond Subr Ind  
Memories: 14 numbers Program display: Keycode display  
Program memory: 98 program steps Program editing: Overwrite capability  
Chipset:   Forensic result:  

mk54.jpg (22414 bytes)The Elektronika MK-54 is an updated version of the Elektronika B3-34 calculator.

By way of a programming example, here is yet another way to calculate the Gamma function:

00    0E    B^
01    0E    B^
02    0E    B^
03    18    ln
04    12    ×
05    14    <->
06    11    -
07    14    <->
08    02    2
09    14    <->
10    13    ÷
11    20    π
12    12    ×
13    18    ln
14    02    2
15    13    ÷
16    10    +
17    14    <->
18    23    1/x
19    01    1
20    02    2
21    13    ÷
22    10    +
23    14    <->
24    0E    B^
25    22    x2
26    12    ×
27    23    1/x
28    03    3
29    06    6
30    00    0
31    13    ÷
32    11    -
33    14    <->
34    0E    B^
35    22    x2
36    22    x2
37    12    ×
38    23    1/x
39    01    1
40    01    1
41    08    8
42    08    8
43    13    ÷
44    10    +
45    50    C/П
46    51    БП
47    00    00