MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Detailed Solution. A system bus connects the primary components of a computer system and includes three main elements the address bus, data bus, and control bus. Statement I: Address bus carries signals relating to addresses between the processor and memory.

Detailed explanation-2: -Address bus-carries memory addresses from the processor to other components such as primary storage and input/output devices. The address bus is unidirectional . Data bus-carries the data between the processor and other components. The data bus is bidirectional .

Detailed explanation-3: -Schematic diagram of a simple computer The Data Bus carries Instructions and Data to and from the memory. The Address Bus carries information about where in memory the data is coming from or going to. The Control Bus is used to tell the memory which way data is going (read/write).

Detailed explanation-4: -The system level bus (as distinct from a CPU’s internal datapath busses) connects the CPU to memory and I/O devices. Typically a system level bus is designed for use as a backplane.

Detailed explanation-5: -An address bus is a bus that is used to specify a physical address. When a processor or DMA-enabled device needs to read or write to a memory location, it specifies that memory location on the address bus (the value to be read or written is sent on the data bus).