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The computer is made up of

_major parts

Precisely the computer is made up of three major parts, the input unit, output unit, and the processing unit

Explanation:

The monitor is the most common output unit, and the keyboard is the most common input unit, and the CPU happens to be the processor. You can figure out the bundles of input and output devices. However, the CPU unit is always one but of different capabilities. The supercomputer has the highest capabilities, And now we have quad-core and oct core processors at home, and they are quite efficient too.