NORBIT

In electronics, the NORBIT family of modules is a very early form (since 1960) of digital logic developed by Philips (and also provided through Valvo and Mullard) that uses modules containing discrete components to build logic function blocks in resistor–transistor logic (RTL) or diode–transistor logic (DTL) technology.

The TU60 (timer circuit) part of 60-series NORBIT 2 family vs CMOS integrated circuit