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Last database update :
04-21-2014


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Yokogawa-Hewlett-Packard  21  aka Woodstock PUMPKIN   (no picture)
 

 
Introduction date01/02/1975
End date1978
TypeRPN Scientifique
Last update date2009_07_14
ProgrammableN
RAM size1
ROM size
Number of functions25+6mem
Alpha capabilitiesN
Number of keys30
Display typeLED
Number of digits on display12.
Graphical (X x Y)N
Extention(s)N
PrinterN
SavingN
Date or clock capabilitiesN
Microprocessor
Functions list1/x sin cos tan x<>y Rv e^x Enter^ CHS EEX DSP x^2 asin acos atan ->R ->P LN LOG 10^x Sqrt Pi STO RCL M- M+ Mx M/
Size (length x width x thickness)129x67x29
Weight170gr
Batteries2xAA
External powerY
Power consumption
TwinHP-21
Made in
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