The correct answer is C. Coprocessor.
A coprocessor is a secondary processor that assists the main processor in performing specialized tasks. Coprocessors are often used for floating point calculations, which are calculations that involve decimal numbers.
A microprocessor is a single-chip integrated circuit that contains all, or most of, the central processing unit (CPU) of a computer. Microprocessors contain both combinational logic and sequential digital logic, and operate on numbers and symbols represented in the binary numeral system.
A microcontroller is a small computer on a single integrated circuit (IC) that contains all the components of a computer: a processor, memory, input/output (I/O) peripherals, and program memory. Microcontrollers are used in many embedded systems, such as automobile engine control systems, remote controls, and industrial process control systems.
A controller is a device or program that monitors a system and makes adjustments to keep it functioning properly. Controllers are used in many different industries, including manufacturing, transportation, and healthcare.
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