Electronics Engineering (ELEX) Board Practice Exam

Which components are typically found in a microprocessor?

1. Memory and power supply

2. ALU, CU, and registers

3. Input and output devices

4. Cache and hard drive

The correct answer is: ALU, CU, and registers

Microprocessors are essentially the brains of a computer system, responsible for executing instructions and processing data. They incorporate several integral components that work together to perform this function. The arithmetic logic unit (ALU) is pivotal in carrying out arithmetic and logical operations. The control unit (CU) coordinates the activities of all the components within the microprocessor and also directs the flow of data to and from the ALU and registers. Registers are small storage locations within the microprocessor that hold temporary data and instructions for quick access during operations. This combination of the ALU, CU, and registers forms the core parts of a microprocessor's architecture, enabling it to process and manage information effectively. Other options mention components that are important in the overall operation of a computer system but are not intrinsic to the microprocessor itself. Memory and power supply refer to external components necessary for the functioning of computers. Input and output devices refer to peripherals that allow user interaction and communication with the system. Cache and hard drive are types of storage but do not fall under the microprocessor's main functional components.