Busicom 100-DA

Date of introduction:  1973 Display technology:  VFD
New price:   Display size:  10 
Size:  9.4" x 7.3" x 2.4"    
Weight:  2 pounds 6 ounces Serial No:  40FB161015
Batteries:   Date of manufacture:  year 1973
AC-Adapter:  230 V Origin of manufacture:  Japan
Precision:  10 Integrated circuits:  TMS0106 
Program steps:   Courtesy of:  Joerg Woerner

Exec100DA_Label.jpg (14927 Byte)Busicom was the brand name used for calculators made by Nippon Calculating Machine Corporation of Japan. They entered the market of electronic pocket calculators already in the year 1971 with the famous Handy LE-120.

If you read the name "Busicom" you'll think about INTEL and the birth of the I-4004 microprocessor. If know the story about the first single-chip calculator circuit you'll think about MOSTEK and the Busicom 60-DB.

Exec100DA_IC.jpg (73891 Byte)This Busicom 100-DA is a simple desktop calculator powered by the Texas Instruments TMS0106 circuit found in calculators like the Canon L100S and the TI-3500.

Exec100DA_Disp.jpg (14520 Byte)The display found in the exec 100-DA is similar to the Panaplex style found in the early desktop calculators manufactured by Texas Instruments.
Exec100DA_PCB.jpg (43833 Byte)The Matsushita display module uses a complete different construction compared to the Panaplex™ developed by Burroughs.

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© Joerg Woerner, October 10, 2002. No reprints without written permission.