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Last database update :
04-21-2014


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Pictures Model Aka Version Intro date End date Type Last update Progr RAM ROM Nb functions Alpha Nb keys Display type Display Graph XY Ext Print Sav Clock             Microprocessor                                     Functions                         Size Weight Batteries Ext power Power Twin Made in Link(s)                                                 Remarks                                                



   APF

Pictures Model Aka Version Intro date End date Type Last update Progr RAM ROM Nb functions Alpha Nb keys Display type Display Graph XY Ext Print Sav Clock             Microprocessor                                     Functions                         Size Weight Batteries Ext power Power Twin Made in Link(s)                                                 Remarks                                                
Mark III  1973>=19734 funct2008_07_13N0 5N19LED8NNNNNTI TMS0101ANCD  6xsealedY  Japan  
Mark V  1973>=19734 funct2007_08_28N0 4N18VFD8 1/2NNNNNTI TMS0101 188x120x40 4xCY Digical Mark VJapan Battery meter.
Mark VI  1973 4 funct2008_09_13N1 6+4memN23VFD8 1/2NNNNN % +/- MC MR M- M+152x108x32 4xAAY    Exists in 3 variations.
Mark VIII  197x 4 funct2007_12_20N1 4+3memN20VFD8+indicNNNNN M- M+ MRC216x121x 4xCY     
MARK 10  1974 4 funct2007_08_28N1 6+4memN23VFD8 1/2NNNNN % +/- MC MR M- M+165x114x 4xAAY     
MARK 14  197x 4 funct2011_05_27N1 7+4memN24LED8 1/2NNNNN D % +/- MC MR M+ M-  YY     
MARK 14/MEMORY  1974>=19744 funct2011_05_27N1 7+4memN24LED8 1/2NNNNN D % +/- MC MR M+ M-133x83x 6xAA7.5VDC 100mA  USA  
MARK 15  ~1974 4 funct2007_08_28N   N LED NNNNN %140x76x 1x9V      
MARK 16  197x 4 funct2009_04_19N1 6+5memN24LED8NNNNN D % MC MR M+ M- EX152x80x 1x9VY     
MARK 21  ~1976 4 funct2007_08_28N1 6+5memN24VFD8NNNNN % EX x<>M MC MR M+ M-159x76x sealed battY     
MARK 22  1977 Scientific2007_08_28N1 17+5memN19VFD8NNNNN EE sin cos tan asin acos atan Sqrt lnx e^x Pi 1/x EEconv MC x<>M M- MR M+159x76x sealed battY     
MARK 23Electronic Slide Rule Calculator ~1974>=19754 funct2009_04_18N1 9+5memN20VFD8NNNNN % x<>y Sqrt 1/x x^2 MC M+ M- x<>M MR159x76x sealed battY  Japan  
MARK 24 1197x 4 funct2007_08_28N1  N LED NNNNN % +/- mem152x76x 1x9V      
MARK 24 2197x 4 funct2007_08_28N1 7+4memN24VFD8 1/2NNNNN DR % EX MC MR M+ M-  YY     
MARK 25 / MEMORY  ~1975 4 funct2009_04_18N1 7+4memN24VFD8NNNNN D % EX MC MR M+ M-140x76x 1x9VY     
MARK 26  ~1975 4 funct2010_02_17N1 5+5memN19LED8NNNNN % MC x->M M- MR M+114x64x 1x9VY  Japan "Exists with or without ""MC x->M M- M+"" labels."
MARK 27  ~1973 4 funct2009_04_18N1 5+1memN19VFD8NNNNN % M127x76x 1x9VY  USA  
MARK 28  ~1973 4 funct2007_08_28N1  N VFD NNNNN % mem114x64x 1x9V     Looks like Mark 26 but not LED.
MARK 29  197x 4 funct2007_08_28N1 9+5memN20LED or VFD8NNNNN % x<>y Sqrt 1/x x^2 MC M+ M- x<>M MR  YY     
galerie2/A/apf_MARK_30MARK 30  <=1975>=19754 funct2009_03_16N1 9+5memN20VFD8 1/2NNNNN % x<>y Sqrt 1/x x^2 MC M+ M- x<>M MR140x76x 1x9VY  USA  
MARK 31  1976 4 funct2007_08_28N1 9+5memN27VFD8NNNNN x<>y 1/x x^2 Sqrt % MC MR x<>M M- M+140x76x 1x9VY     
MARK 32  ~1973 4 funct2007_08_28N1 8+5memN19LED8NNNNN % Sqrt 1/x x^2 MC M- M+ x<>M MR M+127x76x 1x9VY     
MARK 33  ~1976 4 funct2007_08_28N1 5+5memN23VFD8NNNNN % MC MR x<>M M- M+  1x9VY     
MARK 34  1978 4 funct2007_08_28N1 11+5memN29VFD8NNNNN [ ] Pi 1/x e^x Sqrt MC MR x<>M M- M+140x70x 1x9VY     
MARK 40  <=1975>=19754 funct2007_12_20N0 5N18LED8 1/2NNNNN(GI C-593 or Mostek MK50282 N) + Toshiba T1347 (display drv)%115x65x3392gr1x9VY Montgomery Ward P90   
MARK 41  197x 4 funct2007_08_28N0 6N19LED8NNNNN % Sqrt114x64x 1x9VY     
MARK 42 1~1976 4 funct2007_08_28N0 5N19LED8.NNNNN %126x65x2670gr1x9V7.5VDC 100mA     
MARK 42 2197x 4 funct2007_08_28N0 6N19LED8.NNNNN % Sqrt126x65x26 1x9V7.5VDC 100mA     
MARK 43  197x 4 funct2007_08_28N0 5N18LED8NNNNN %114x64x 1x9VY     
MARK 50Scientific Calculator 1975 Scientific2009_04_19N1 17+5memN19VFD8NNNNN EE sin cos tan asin acos atan Sqrt lnx e^x Pi 1/x EEconv MC x<>M M- MR M+140x76x 1x9VY Montgomery Ward P330Japan  
MARK 51Scientific Calculator <=1975>=1975Scientific2007_12_20N1 17+5memN19VFD8NNNNNGeneral Instrument (GI) CF596EE sin cos tan asin acos atan Sqrt lnx e^x Pi 1/x EEconv mc x<>m m- mr m+140x76x 1x9VY     
MARK 52  197x Scientific2007_08_28N1 17+5memN19LED8NNNNN EE EEconv sin cos tan asin acos atan Sqrt lnx e^x Pi 1/x MC x<>M M- MR M+  1x9V      
MARK 55  1977 Scientific2007_12_20N1 >=45+2memN30LED12 or 10 1/2+2 1/2NNNNN ln e^x sin cos tan asin acos atan sinh cosh tanh asinh acosh atanh Sum+ y^x +/- x<>y v EE ENT ->pol ->rec ->rad ->deg rad deg meanx,s Sqrt x^2 x! c->f % ltr->gal Delta% cm->in LASTX Pi 1/x sci kg->lb RCL STO159x76x 3xAA sealed4.5V    RPN calculations. HP display.
MARK 56  1977>=1977Scientific2010_01_29N   N LED NNNNN  152x76x sealed battY     
MARK 60  197x 4 funct2007_08_28N0 5N18LED8NNNNN %114x64x 1x9VY     
EXECUTIVEMARK 61 1977>=19774 funct2010_01_29N1 6+5memN24VFD8 1/2NNNNN Sqrt % mc mr m<->x m- m+140x70x13 sealed battY     
EXECUTIVEMARK 61S 197x 4 funct2007_08_28N1 6+5memN24VFD8 1/2NNNNN Sqrt % mc mr m<->x m- m+140x70x13 sealed battY    Same as Mark 61 except black color.
MARK 62  197x 4 funct2007_08_28N   N LED NNNNN Sqrt %127x64x 1x9V      
MARK 64  197x 4 funct2007_08_28N1 8+5memN19LED NNNNN % 1/x Sqrt x^2 MC x<>M M- MR M+127x64x 1x9V      
MARK 65  1977>=19774 funct2007_08_28N1 6+5memN24VFD8 1/2NNNNNTMS1044NL% Sqrt mc mr m/x m- m+125x74x26 3xAAA7.5VDC 100mA     
galerie/A/apf_MARK_65rMARK 65r  1977>=19774 funct2010_01_29N1 6+5memN24VFD8 1/2NNNNNTMS1044NLSqrt % mc mr m/x m- m+125x74x26 2xAAA sealed7.5VDC 100mA  Japan Same as MARK 65 except sealed batt
MARK 66r  1977 4 funct2007_12_20N1 7+5memN29VFD8 1/2NNNNN [ ] x<>y 1/x x^2 Sqrt % mc mr mx m- m+127x70x sealed battY     
MARK 68r  1977 Scientific2007_12_20N1 25+5mem+ConvN28VFD8 1/2NNNNN Sqrt x^2 y^x % [( )] Pi +/- ee sin asin cos acos tan atan logx 10^x lnx e^x 1/x CONV MC x<>M M- MR M+127x70x sealed battY     
MARK 70 1~1974 4 funct2007_08_28N1 5+5memN23VFD NNNNN % MC MR x<> M- M+127x76x 1x9V      
MARK 70 2~1974 4 funct2007_08_28N1 5+5memN23LED8NNNNN % MC MR x<>M M- M+  1x9VY     
MARK 72  197x 4 funct2008_09_13N1 6+5memN24LED8NNNNN Sqrt % MC MR x<>M M- M+140x76x 1x9VY  Hong Kong  
MARK 73B-5000M 197x 4 funct2007_08_28N1 5+2memN20LED8NNNNN % M+ MR127x76x 1x9VY     
M74MARK 74 <=1979>=19794 funct2009_04_18N1 6+4memN24LED8.NNNNNTI TMS0972NL+/- % MC MR M- M+135x72x2386gr1x9V9VDC  Singapore  
MARK 75  197x 4 funct2007_08_28N1 5+5memN23LED or VFD8NNNNN % MC MR x<>y M- M+  YY     
galerie/A/apf_MARK_82MARK 82  <=1975>=19764 funct2010_01_29N0 5N18LED8NNNNNMostek MK50288N + Toshiba T1347%131x66x24 1x9V7.5VDC 100mA  Japan  
MARK 84  1977>=19774 funct2010_01_29N1 5+5memN19LED8NNNNN % MC x<>M M- MR M+131x66x24 1x9VY    "Exists with or without ""MC x->M M- M+"" labels."
MARK 85  197x 4 funct2007_08_28N1 5+5memN23VFD8 1/2NNNNN % mc mr m<>x m- m+125x74x26 3xAAAY     
MARK 86  1976>=19764 funct2010_01_29N1 9+5memN27VFD8 1/2NNNNN x<>y 1/x x^2 Sqrt % mc mr m<>x m- m+125x74x26 3xAAAY     
MARK 88  1976>=1976Scientific2010_01_29N1  N19VFD NNNNN  127x70x 3xAAA      
MARK 90  1977>=1977Scient+Prog2010_01_29Y10+72steps Scient+ProgN45LED8+2NNNNN Scient+Prog152x76x25 3xSealedDC     
RS-1Kel-Co c1979 4 funct2010_06_13N  16N29LED NNNNN Race tracking140x70x 1x9V  APF RS-1, Cannella RS1   
RS-2Trotting/pacing computer and Kel-co by APF <=1979>=19804 funct2010_06_13N   N29LED NNNNN Race tracking140x70x 1x9V      
MATHEMAGICIAN1500 ~1980 Game2010_05_14N0 4+3gameN20LED NNNNN SEL HLT ?  Y      
galerie/A/apf_19021902  <=1982>=19824 funct2007_09_17N1 6+4memN25LCD8+indicNNNNNSharp LI3023MSqrt % MC MR M- M+116x66x19 2xAAN     
galerie/A/apf_1948A1948A  197x/198x 4 funct2010_01_29N1 8+4memN25YLCD8+indicNNNNN R +/- Sqrt % MC MR M- M+110x66x9 2x1.5VcellN  Hong Kong  
M2201M 2201 198x 4 funct2010_03_24N1 11+4memN30LCD8+indicNNNNN x^n Pi +/- x^2 1/x Sqrt % MC MR M- M+  YN     
M 2202M2202 198x 4 funct2010_03_24N1 11+4memN30LCD8+indicNNNNN () Pi +/- x^2 1/x Sqrt % MC MR M- M+  YN     
MARK 5501  197x/198x 4 funct+time2007_08_28N1 6+3mem+9timeN30LCD8+indicNNNNY Sqrt % M- M+ MRC SET YMD HMS T ALM/OFF ADJ LAP ST/SP PM  2xcellN     
3550MINI-CALC 198x 4 funct2010_02_17N1 6+4memN24LCD8+indicNNNNN Sqrt % MC M- MR M+  YN apf M 3550   
M 3550MINI-CALC 198x 4 funct2010_02_17N1 6+4memN24LCD8+indicNNNNN Sqrt % MC M- MR M+  YN apf 3550Hong Kong  
5539  198x 4 funct2007_08_28N1  N28LCD8+indicNNNNY  57x89x  N     



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