Final answer:
The main part of a computer that handles its computations is the CPU. It is the brain of the computer which performs calculations and runs operations. Other components like GPU, RAM, and HDD have supportive and storage roles.
Step-by-step explanation:
The main part of a computer that handles its computation is the CPU (Central Processing Unit). Unlike a GPU (Graphics Processing Unit) which is specialized for graphics rendering, a CPU is designed to perform calculations and run the operations required to run programs. It's much like the brain of the computer where most calculations take place, whether it's simple arithmetic or controlling the logic of software applications. RAM (Random Access Memory) and HDD (Hard Disk Drive) serve different roles, such as storing temporary data and long-term storage of files, respectively. While a computer can store and perform calculations on large data sets, and hold a large amount of experimental results on the molecules and their motion, the CPU is what actually processes this information.