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Busicom 141 Desktop Calculator

NCM/Busicom 141

The Busicom 141 was a follow-on to Nippon Calculating Machine Co., Ltd.'s first desktop electronic calculator, the Busicom 161. The 141 was a somewhat stripped-down version of the 161, providing 14 digits of capacity versus 16 of the 161, and omitting the square root function. The machine utilizes all discrete diode/transistor logic, along with a 256-bit magnetic core memory array for working register storage. The calculator operates with fixed decimal point for all operations, selected at 0, 1, 2, 3, 6 or 8 digits behind the decimal point. Like the 161, the machine provides a 'backspace' feature for error correction, along with true credit balance.
NCM/Busicom 141 Specifications

Manufacturer: Nippon Calculating Machine Co., Ltd.
Model Number: 141
Manufactured In: Japan
Date of Introduction: November, 1967
Display Technology: Nixie Tube, 14 Digits
Logic Technology: Discrete diode/transistor circuitry
256-bit Magnetic Core Memory array for working register storage
Digits of Capacity: 14
Decimal Modes: Rotary switch selectable fixed decimal at 0, 1, 2, 3, 6 or 8 digits behind the decimal
Math Functions: Four Function
Memories: One accumulator-style memory register
Performance: Addition/Subtraction: 50ms; Multiplication/Division/Square Root: 300-800ms (Mfg. Claims)
Size: 17 3/8" wide, 18 1/2" deep, 9 1/2" high
Weight: 33 pounds

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