A Big database for small calculators.
Last database update :
04212014


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 
HTH / Detron

see also Detron 
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 
 830D  electronic calculator  1  ~1976   4 funct  2010_04_04  N  0   10  N  23  VFD  8 1/2  N  N  N  N  N   +/ % Pi x^2 1/x Sqrt  117x74x18   1xAA  Y      C/CE key 
 830D  electronic calculator HTH  2  ~1976   4 funct  2010_04_04  N  0   10  N  23  VFD  8 1/2  N  N  N  N  N   +/ % Pi x^2 1/x Sqrt  117x74x18   1xAA  Y      C/CE key 
 830D  electronic calculator HTH  3  <=1977  >=1977  4 funct  2013_04_16  N  0   10  N  23  VFD  8 1/2  N  N  N  N  N  Hitachi: HD37330  +/ % Pi x^2 1/x Sqrt  117x74x18   1xAA  Y      C key 
 830MD  electronic calculator HTH  1  ~1977   4 funct  2010_04_04  N  1   6+4mem  N  23  VFD  8 1/2  N  N  N  N  N   % Sqrt M+ M RM CM  117x74x18   1xAA  Y      
 830MD  HTH  2  ~1977   4 funct  2010_04_04  N  1   6+4mem  N  23  VFD  8 1/2  N  N  N  N  N   % Sqrt M+ M RM CM  117x74x18   1xAA  Y    Korea   
 unknown model    <=1977  >=1977  4 funct  2010_04_04  N  1   7+3mem  N  23  VFD  8 1/2  N  N  N  N  N  Hitachi: HD37350  Sqrt % X^Y M+ M RM  117x74x18   1xAA  Y      
