X-Nico

Logic gate

For small-scale logic, designers now use prefabricated logic gates from families of devices such as the TTL 7400 series by Texas Instruments and the CMOS 4000 series by RCA, and their more recent descendants.

see also

Spacebus

Several variants have been built: the early Spacebus 100 and Spacebus 300; followed by the Spacebus 2000, optimised for launch on the Ariane 4 carrier rocket; and the subsequent modular Spacebus 3000 and 4000 series, designed for use with the Ariane 5 rocket.

Tognum

There is also a joint venture with Transmashholding, called MTU Transmashholding Diesel Technologies; it will produce MTU 4000-series engines at a factory near Kolomna in Russia.