Bull Gamma 10

Bull Gamma 10
Overview of a Bull Gamma 10, with the printer unit on the left
ManufacturerCompagnie des Machines Bull
TypeBusiness computer
GenerationSecond generation
Release date1963
Units sold> 1400 (European market)
CPUTransistorized, about 570 DTL modules @ 7 µs memory cycle (140 kHz)
Memory1K to 4K 7-bit characters (7 to 28 kb) (Core memory)
StorageOptional tape readers (1 MB tapes)
InputPunched cards
Power2.4 kW
Dimensions20 sq. meters
Weight900kg
PredecessorBull Gamma 3
SuccessorBull Gamma 55

The Gamma 10 was a business computer designed and marketed by the Compagnie des Machines Bull starting in 1963.

Built as the successor to the Gamma 3 and as a response to the success of IBM's transistorized 1401, the Gamma 10 was a compact second-generation computer aimed at business use. Developed during a period of modernization at Bull under the influence of General Electric, it played a key role in the transition from punched card equipment to electronic data processing on the European market.

Widely adopted by small and medium-sized businesses across Europe during the 1960s, the Gamma 10 holds the distinction of being the first European computer to surpass 1,000 units sold.