Answer:
Model.
Explanation:
A computer can be defined as a programmable electronic device that is capable of processing, storing and retrieving data rapidly based on an algorithm. Thus, a computer can be used to easily perform logical operations and mathematical calculations.
Computers are classified based on the following;
I. Size: these includes supercomputers, microcomputers, minicomputers, and mainframe computers.
II. Functionality (purpose): it can either be used for special purpose such as artificial intelligence or general purpose such as word processing.
III. Data handling: it can either be analog, digital or hybrid.
Hence, model is not used to classify computer systems.
