System Bus
Introduction
The system bus, also known as the front-side bus (FSB), is a communication pathway that allows different components of a computer system to exchange data.
Functions of System Bus
- Data Transfer: The system bus transfers data between the CPU, memory, and input/output devices.
- Addressing: The system bus carries address signals that identify the source or destination of data.
- Control Signals: The system bus carries control signals that manage data transfer, such as read and write signals.
Types of System Bus
- Parallel Bus: Transfers data in parallel, using multiple wires or lines.
- Serial Bus: Transfers data serially, one bit at a time.
Characteristics of System Bus
- Bandwidth: The amount of data that can be transferred per unit time.
- Speed: The rate at which data is transferred.
- Width: The number of bits that can be transferred simultaneously.
Importance of System Bus
- System Performance: The system bus plays a critical role in determining system performance.
- Data Transfer: The system bus enables data transfer between different components.
- Scalability: The system bus allows for the addition of new components or peripherals.
Examples of System Bus
- PCI (Peripheral Component Interconnect) Bus: A parallel bus used for connecting peripherals.
- PCIe (Peripheral Component Interconnect Express) Bus: A serial bus used for connecting high-speed peripherals.
- USB (Universal Serial Bus): A serial bus used for connecting external peripherals.
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