Bus (computing) - WikipediaIn computer architecture , a bus  a contraction of the Latin omnibus is a communication system that transfers data between components inside a computer , or between computers. This expression covers all related hardware components wire, optical fiber, etc. Early computer buses were parallel electrical wires with multiple hardware connections, but the term is now used for any physical arrangement that provides the same logical function as a parallel electrical bus. Modern computer buses can use both parallel and bit serial connections, and can be wired in either a multidrop electrical parallel or daisy chain topology, or connected by switched hubs, as in the case of USB. An early computer might contain a hand-wired CPU of vacuum tubes , a magnetic drum for main memory, and a punch tape and printer for reading and writing data respectively. In both examples, computer buses of one form or another move data between all of these devices. In most traditional computer architectures , the CPU and main memory tend to be tightly coupled.
Input-output organisation // peripheral devices // input-output interface
The Embedded Rust Book
These peripherals are useful because they allow a developer to offload processing to them, it is recommended that devices be evenly spaced across the cable. This subject provide the required background of computer installation, maintenance and testing of peripheral with micro comp uters So a course on Pff Peripherals and Interfacing Devices is required to develop such skills. Interrupts 2. In all cases.
Special Edition using Macromedia Director 8. Devices on the bus could talk to each other with no CPU intervention. Hardware 2. Given these changes, "expansion" and "peripheral" no longer have the same connotations.
B a distinct identification message which identifies said peripheral device coupled to said communications interface; and. A means for setting said currently assigned address value stored in its interface memory means to said predefined default address value whenever said communications interface receives a reset message not sent by itself;. B means for sending said reset message after said communications interface has been first assigned a unique address value distinct from said predefined default address value, said reset message being sent via said communications medium to said communications interfaces whose currently assigned address value is the same as said unique address value; and. A means for retrieving said distinct identification messages from all communications interfaces which are reset in response to said reset message; and. B means for assigning a new unique address value to each such communications interface from which said distinct identification message is retrieved in response to said reset message. C device capabilities data indicating specific characteristics of said peripheral device coupled to said communications interface;. C device capabilities data indicating specific characteristics of said peripheral device coupled to said communications interface; and.