This bus connects the CPU to memory on the system board. a. Port b. System c. Peripheral d. Tablet
The correct answer and explanation is:
The correct answer is: b. System
Explanation (300 words):
In a computer system, the system bus is a critical component that facilitates communication between the CPU (Central Processing Unit) and memory (RAM). It is essentially a communication pathway composed of multiple lines (wires or traces on the motherboard) that transmit data, addresses, and control signals.
The system bus is made up of three main parts:
- Data Bus – Carries the actual data being processed. For example, if the CPU wants to read a value from memory, the data bus transfers that value from RAM to the CPU.
- Address Bus – Carries the address of the memory location where the data needs to be read or written.
- Control Bus – Carries control signals that coordinate the actions of the CPU and other components (e.g., memory read/write operations).
This interconnected structure allows the CPU to access memory quickly and efficiently, making it essential for overall system performance. The speed and width (in bits) of the system bus greatly impact how fast data moves between the CPU and RAM.
Let’s look at the incorrect options for clarity:
- a. Port – This refers to an interface through which external devices can connect to a computer (e.g., USB ports). It does not connect the CPU directly to memory.
- c. Peripheral – This includes external devices like keyboards, printers, and monitors. Peripherals connect to the CPU but not directly via the bus that links to system memory.
- d. Tablet – This is a type of computing device, not a component of computer architecture.
In summary, the system bus is essential for the core operation of any computer, acting as the main highway for data moving between the CPU and memory. Understanding its role helps in grasping how computers process information and manage tasks efficiently.