3. What does CPU stand for? Explain its function
Central Processing Unit. Also known as a microprocessor, a CPU is the brains of a computer. To be more specific, a CPU fetches program instructions from RAM (input), interprets and processes it (execution) and then sends back the computed results so that the relevant components can carry out the instructions.
What is a CPU made of? A CPU is a complex integrated circuit made of silicon. A modern CPU can have billions of microscopic transistors mounted on it. The CPU is typically enclosed by a metallic heat spreader which allows for better heat dissipation.