What is computer bus? What is the unit of measurement of speed of computer bus? Describe about various types of computer bus.
A computer bus is a communication pathway that connects different components of a computer system, allowing them to exchange data and instructions with each other. The bus acts as a shared communication link between the components, allowing for efficient and effective communication between them.
The unit of measurement for the speed of a computer bus is bits per second (bps) or bytes per second (Bps). This refers to the rate at which data can be transferred across the bus.
There are several types of computer buses, including:
System bus: The system bus is the main communication pathway between the CPU and other components of the computer, such as memory and input/output devices. It is divided into the address bus, data bus, and control bus, which are responsible for carrying addresses, data, and control signals respectively.
Peripheral Component Interconnect (PCI) bus: The PCI bus is a high-speed bus that connects peripheral devices to the motherboard of the computer. It is used for devices such as graphics cards, sound cards, and network cards.
Universal Serial Bus (USB) bus: The USB bus is a standardized bus used for connecting external devices to the computer, such as printers, scanners, and external hard drives. It provides a high-speed, hot-swappable connection between devices and the computer.
Small Computer System Interface (SCSI) bus: The SCSI bus is a high-speed bus used for connecting hard drives, tape drives, and other storage devices to the computer. It provides a high-speed, parallel connection that can support multiple devices.
Industry Standard Architecture (ISA) bus: The ISA bus was one of the earliest types of computer buses and was used for connecting peripheral devices to the computer. It has since been replaced by newer, faster buses such as PCI.
Accelerated Graphics Port (AGP) bus: The AGP bus is a high-speed bus used for connecting graphics cards to the motherboard of the computer. It provides a high-speed, dedicated connection that allows for fast graphics processing.
In summary, a computer bus is a communication pathway that connects different components of a computer system, allowing them to exchange data and instructions. There are several types of computer buses, each with their own characteristics and uses, including the system bus, PCI bus, USB bus, SCSI bus, ISA bus, and AGP bus.