Feature  

Description 

Case:  

Color case:  

White

Color keyboard:  

Black 

Weight:  

6600 g

Voltage selection:  

AC 100, 110, 117, 125, 220 or 240V 50/60Hz
DC 85V (SONY rechargeable battery pack: BP-11E)
12V (auto/boat battery) via car battery cord: DCC-2AW

Adapter:  

Power consumption:  

13 Watt (AC), 6 Watt (DC)

Working condition:  

0 to 40 degrees C

Printed Circuit Boards (PCB's):  

Memories:  

Memories indication:  

Prog. steps:  

Decimal point handling:  

Auto decimal point entry and alignment in preset point system

Rounding:  

Auto round off or drop numbers in the last three digits,
via switch on keyboard '5/4-N-_'-position.

Calculation overflow indication:  

Yes 

Input overflow indication:  

Divide by Zero indication:  

Square root of negative value indication:  

Negative value indication:  

Yes

Constant function:  

Auto Power-off:  

Display details:  

Keyboard details:  

Printer:  

None

Extra features/remarks:  

First electronic calculator from SONY, after prototypes MD5, MD6, MM7 and MX11
SOBAX was a coined name, that meant "Solid State Abacus", (The abacus was also known as 'Abax'
SONY decided to halt production of the SOBAX calculators in 1973,
the company could not keep pace with the fierce competition.

3 registers for operation and two for memory.
Calculation speed (using 14 digits):
addition and subtraction: 0.015s
multiplication: 0.25s
division: 0.4s
Accessories: dust cover and polishing cloth 

Initial price:  

Overall quality rate (1-10):  

OEM-copies:  

Other sources of info:  

KANTAMA, BENSENE Rick (ICC500W), SONY, SONY Pressroom

Advertisements/Publications:  

Example

Operation

Result

Addition and Subtraction:
98+76-54 

 
98 [+] 76 [-] 54 [=]

Multiplication and division:
12x34/17 

 
12 [X] 34 [(division)] 17 [=]