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Commodore  SR4148R  aka SR-4148R   (5 pictures)
 

Exist with oblong or rounded corners square keys.
 
Commodore SR4148R

Commodore SR4148R

Commodore SR4148R

Commodore SR4148R

Commodore SR4148R

Introduction date<=1974
End date>=1977
TypeScientific
Last update date2011_02_28
ProgrammableN
RAM size2
ROM size
Number of functions30+7mem
Alpha capabilitiesN
Number of keys48
Display typeLED
Number of digits on display10 1/2+2 1/2
Graphical (X x Y)N
Extention(s)N
PrinterN
SavingN
Date or clock capabilitiesN
MicroprocessorCommodore G-04 or GHU-03A + GHU-01A ESR-T + 2x ITT546A-5N
Functions listEE EEv EE^ ( ) Sqrt x^2 y^(1/x) 10^x log e^x ln y^x d-r sin cos tan asin acos atan 1/x ->P ->R x<>y +/- Pi STO1 RCL1 Sum1 STO2 RCL2 Meanx-sigma xn
Size (length x width x thickness)152x81x30
Weight158gr
Batteries3xAA sealed
External power6VDC
Power consumption400mA
Twin
Made inEngland, USA
Link(s)

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