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

A coprocessor is a computer processor used to supplement the functions of the primary processor (the CPU). Operations performed by the coprocessor may be floating point arithmetic, graphics, signal processing, string processing, encryption or I/O Interfacing with peripheral devices. By offloading processor-intensive tasks from the main processor, ...
Found on
http://en.wikipedia.org/wiki/Coprocessor

A chip that relieves the computer's microprocessor of specific processing tasks. A maths coprocessor, for example, handles numeric processing. A graphics coprocessor handles video rendering. The Intel Pentium and other modern microprocessors include a built-in maths coprocessor.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.