Vintage Radio Shack EC-425 Calculator 1975 / Charger + Box - Fully Working
This is a tested and fully working unit. You will need 3 AA Batteries OR 3 Rechargeable Batteries.
The unit only works with batteries and the charger is just for charging Batteries , that is its only purpose.
You can see that on instructions on back in photo.
Comes with Calculator , Charger and original box. Manual you can get online.
The unit comes with Invisible Security Markings.
Introduction date 1974
End date 1975
Type 4 funct
Last update date 2011_07_22
Programmable N
RAM size 0
ROM size
Number of functions 10
Alpha capabilities N
Number of keys 23
Display type LED
Number of digits on display 8 1/2 + 2 1/2
Graphical (X x Y) N
Extention(s) N
Printer N
Saving N
Date or clock capabilities N
Microprocessor TI TMS0120
Functions list 1/x x^2 SQRT CD +/- EE
Size (length x width x thickness) 160x79x38
Weight
Batteries 3xAA
External power 8V2AC
Power consumption 225mA
Twin TI SR-10
Made in USA
I believe in WYSIWYG - what you see is what you will get. All products are exactly the ones shown in my listings , no stock photos. "Pictures are worth a thousand words"