Busicom 141 Desktop Calculator
The Busicom 141 was a follow-on to Nippon Calculating Machine Co., Ltd.'s first
marketed 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 claim to fame
for the 141 was that it was essenially a re-implementation of the Busicom
161 using small-scale DTL integrated circuits provided by US chipmaker
Fairchild. The 141 was not completely IC-based, as it still used a
small magnetic core memory array for working register storage, and
it still contained a significant number of discrete components.
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
||Nippon Calculating Machine Co., Ltd.
|Date of Introduction:
||Nixie Tube, 14 Digits
||Early Fairchild DTuL Small Scale ICs
||256-bit Magnetic Core Memory array for working register storage
|Digits of Capacity:
||Rotary switch selectable fixed decimal at 0, 1, 2, 3, 6 or 8 digits behind the decimal
||One accumulator-style memory register
||Addition/Subtraction: 50ms; Multiplication/Division/Square Root: 300-800ms (Mfg. Claims)
||17 3/8" wide, 18 1/2" deep, 9 1/2" high
Copyright ©1997-2019, Rick Bensene.