National Semiconductor Model 600

Serial number 137232
Accessories Manual sheet

Original cardboard box
Condition Very good. Minor scratches from normal wear.
Repairs, Comments
Acquired 1.7.2003
Type, Precision, Input mode Simple, 6 BCD digits, no exponent, Reverse Polish Notation.
Integer arithmetic. Hardcoded decimal point switchable using DECIMAL switch.
Programmable No
Memory None
Display 6 digit 7 segment red LED.
Special features Instructions on the back. 2 level RPN stack.
Original Pricing, Production Made by National Semiconductor Co., 2921 Copper Rd., Santa Clara, CA 95051, 1973, $29.95
Batteries 9V block or external power supply, standard connector
Dimensions Length 12.9cm, Width 6.8cm, Height 2.4cm
Links Stack operation similar to the Accuron 600 and the Sinclair Scientific.
Comment Pressing "C" once only clears the X register. Pressing "C" twice clears X and Y.
To enter the first number press ie. "C C 3 +". To substract enter "2 -", and similar for other operations.
To enter a negative number press ie. "C C 7 -".
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