The bit ISA bus was also used with bit processors for several years. ISA was designed to connect peripheral cards to the motherboard and allows for bus mastering. Only the first 16 MB of main memory is addressable. The original 8-bit bus ran from the 4.
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In computers, the front side bus FSB or system bus is a term for the physical bi-directional data bus that carries all electronic signal information between the central processing unit CPU and other devices within the system such as random access memory RAM , AGP video cards , PCI expansion cards, hard disks, the memory containing the system BIOS, etc. The bus is a series of interconnecting electrical leads which carry signals.
The bus design can further be broken down into bus sections. The internal bus main bus, processor bus section connects all the internal computer components of the CPU and main memory. This is called the Local Bus or Front side Bus. Ex: 8-bit, bit, bit, or bit data path. The ISA bus is still in use even in the newest computers, despite the fact that it is largely changed since it was expanded to 16 bits in When the DX was introduced in the mids with its bit data bus, IBM decided to create a bus to match this width.
IBM wants to patent this bus so that other manufacturers cannot make this bus. The EISA bus is not popular on desktop systems for several reasons. First, EISA-based systems tend to be much more expensive than other types of systems. Second, there are few EISA-based cards available. Now a days, if you buy any computer it will come with Universal Serial Bus connectors on the back.
These USB connectors let you attach everything from mice to printers to your computer quickly and easily. The operating system supports USB as well, so the installation of the device drivers is quick and easy, too. The Universal Serial Bus gives you a single, standardized, easy- to-use way to connect up to devices to a computer. A sample list of USB devices that you can buy today includes:.
The cable is also shielded. FireWire is a method of transferring information between digital devices, especially audio and video equipment. At some time in the future, that number is expected to jump to an unbelievable 3. You can connect up to 63 devices to a Fire Wire bus.
Windows operating systems 98 and later and Mac 05 8. Following Fig shows an example of a local bus that uses a 32 bit expansion slot created by adding an extra slot to a 16 bit ISA slot. These devices can take any one of the following forms:. The bus will eventually be succeeded by PCI Express, which is standard in most new computers, and other technologies. The PCI specification covers the physical size of the bus including wire spacing , electrical characteristics, bus timing, and protocols.
The advantage of PCI local bus is that devices connected to it can run at one speed, while CPU runs at different speed. Some motherboards have been built with multiple independent AGP slots. Fire wire or i. Link or FireWire is a method of transferring information between digital devices, especially audio and video equipment.
Bus Interface ISA (Industry Standard Architecture) VESA local bus
Types of Computer Buses
Patrick, a computer technician, is a dedicated writer who wishes to make the world better by informing individuals who seek more knowledge. Inside computers, there are many internal components. A bus is a common pathway through which information flows from one computer component to another. This pathway is used for communication purpose and it is established between two or more computer components.