Decimo Vatman Executive

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Decimo Vatman Executive Type 2 is a 6 Volt machine which uses 4 x AA batteries
8 digits, green fluorescent in single tube.
4 functions, %, square root, memory and VAT (Value added Tax)
83 mm x 130 mm x 28 mm (3.25" x 5.2" x 1.1").
1976 Made In Japan

Decimo was founded by Douglas Dorsett in Luton, Bedfordshire, England. The company  had about 50 employees and marketed a wide range of office products.

Further information can be found at

Our calculator with the original soft case has a serial number of E 108391 and was very kindly donated by Gordon Boylin

Manufacturer: Decimo
Date: 1976

Other Systems Related To Decimo Vatman Executive:

Item Manufacturer Date
Decimo Vatman Decimo 1974
Decimo Vatman Jumbo Decimo 1974
Decimo Vatman Memory Decimo 1975
Decimo Realtone calculator Decimo 1975
Decimo Super Vatman M Decimo 1975
Decimo Vatman Mini II Electronic Calculator Decimo 1975
Decimo Super Vatman (type 1) Decimo 1975
Decimo Super Vatman SS 1 Decimo 1977
Decimo Vatman 121 LCD Desktop Calculator Decimo 1979
Decimo Goldfinger Calculator 1981 Decimo 1981

This exhibit has a reference ID of CH12462. Please quote this reference ID in any communication with the Centre for Computing History.


Decimo Vatman Executive

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