A Big database for small calculators.
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 |
Keystone
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Some models are also named Berkey Keystone. Berkey 2 Keystone Place Paramus, New Jersey USA. |
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 |
| 88 | | | c1974-75 | | 4 funct | 2009_04_13 | N | 0 | | 5 | N | 18 | Panaplex | 8 | N | N | N | N | N | | % | 133x81x? | | 4xAA | 5VDC | | | | | |
| 98 | | | c1974-75 | | 4 funct | 2010_02_14 | N | 1 | | 5+2mem | N | 20 | VFD Orange | 8 1/2 + 1led | N | N | N | N | N | | % MR MC | 133x81x41 | 260gr | sealed | 10.6VAC | | | USA | | |
| 108 | | | 197x | | 4 funct | 2009_04_13 | N | 1 | | 8+1mem | N | 22 | Panaplex | 8 | N | N | N | N | N | | EX Sqrt +/- % M | 133x81x? | | sealed | Y | | | | | |
| ATLAS-RAND | | | 197x | | 4 funct | 2009_04_13 | N | 0 | | 5 | N | 18 | Panaplex | 8 | N | N | N | N | N | | % | | | 4xAA | Y | | | | | |
| 350 | Berkey Keystone | | 197x | | 4 funct | 2009_04_13 | N | 0 | | 5 | N | 18 | Panaplex | | N | N | N | N | N | | % | | | Y | Y | | | | | |
| 370 | | | 197x | | 4 funct | 2011_05_27 | N | 0 | | 5 | N | 18 | VFD ? | 8 | N | N | N | N | N | | % | 133x81x? | | sealed | Y | | | USA | | |
| 390 | | | <=1973 | >=1973 | 4 funct | 2009_04_13 | N | 1 | | 5+2mem | N | 20 | Panaplex | 8 | N | N | N | N | N | | % MR MC | 133x81x? | | 4xAA sealed | 10V6AC | | | | | |
| 395 | exponent 1 | | <=1974 | >=1974 | 4 funct | 2009_04_13 | N | 1 | | 8+1mem | N | 22 | Panaplex + 1led | 8 | N | N | N | N | N | Rockwell A1241PA | EX Sqrt +/- % M | 133x81x? | | 4xAA sealed | 10V6AC | | | | | |
| 2010 | | | 197x | | 4 funct | 2009_04_13 | N | 0 | | 7 | N | 20 | Panaplex | 8 | N | N | N | N | N | | +/- EX % | 140x81x? | | 2xAA | 2V5DC | | | | | |
| 2030 | Berkey Keystone 2030 | | 1975 | | 4 funct | 2009_04_13 | N | 1 | | 7+4mem | N | 24 | Panaplex | 8 | N | N | N | N | N | | +/- EX % M+ M- MR MC | 159x83x38 | | sealed | 6V9DC | | | | | |
| 2040 | | | c1975 | | 4 funct | 2009_04_13 | N | 1 | | | N | | VFD ? | | N | N | N | N | N | | % | 152x81x? | | sealed | Y | | | | | |
| 2050 | | | 1974 | >=1975 | Scient | 2009_04_13 | N | 1 | | 18+1mem | N | 30 | Panaplex | 8 | N | N | N | N | N | Rockwell 15473PA | sin asin cos acos tan atan EX e^x LN X^2 LOG Sqrt +/- Pi M | 171x85x35 | | sealed | 6V9DC | | | | | |
| SC 650 | | | 197x | | 4 funct | 2011_05_27 | N | 0 | | 7 | N | 20 | Panaplex | 8 | N | N | N | N | N | | +/- EX % | 140x81x? | | 2xAA | Y | | | USA | | |
| SC 652 | | | 197x | | 4 funct | 2009_04_13 | N | 1 | | | N | | VFD ? | | N | N | N | N | N | | % | 152x81x? | | sealed | Y | | | | | |
| SC 654 | | | 197x | | 4 funct | 2009_04_13 | N | 1 | | | N | | VFD ? | | N | N | N | N | N | | % | 152x81x? | | sealed | Y | | | | | |
| SC 656 | Berkey Keystone SC656 | | 197x | | Scient | 2010_09_29 | N | 1 | | 18+1mem | N | 30 | VFD | 8 1/2 | N | N | N | N | N | | sin asin cos acos tan atan EX e^x LN X^2 LOG Sqrt +/- Pi M | 152x81x? | | sealed | Y | | | | | |
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