Here is key explanation of System Buses:
A system bus is a communication pathway that allows various components within a computer system to transfer data and information between each other.
• It serves as a high-speed channel through which different hardware components communicate and exchange signals.
• It is an essential part of the overall computer architecture, facilitating the flow of data between the central processing unit (CPU), memory, and other peripherals.
The system bus typically consists of three main types of buses:
1.) Data Bus:
The data bus is responsible for carrying data between the CPU, memory, and other peripheral devices. It is bidirectional, meaning it can transmit data in both directions.
- The width of the data bus (measured in bits) determines the amount of data that can be transferred simultaneously. For example, a 32-bit data bus can transfer 32 bits of data in parallel.
2.) Address Bus:
The address bus is unidirectional and carries memory addresses from the CPU to memory or peripheral devices. The CPU uses the address bus to specify the location in memory where data needs to be read from or written to.
- The width of the address bus determines the maximum addressable memory. For instance, a 16-bit address bus can address 2^16 (64 kilobytes) memory locations.
3.) Control Bus:
The control bus carries control signals that coordinate and manage the operations of various components within the computer system. These control signals include read, write, interrupt, and clock signals.
- The control bus ensures that data is transferred at the correct time and that different components are synchronized in their operations.
