
1) Central processing unit
Found on
https://www.crosswordclues.com/clue/millicode

In computer architecture, Millicode is a higher level of microcode used to implement the instruction set of a computer. Millicode runs on top of the microcoded instructions and uses those instructions to implement more complex instructions visible to the user of the system. IBM invented both the concept and the term Millicode for the System/390 96...
Found on
http://en.wikipedia.org/wiki/Millicode
No exact match found.