scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 472
CPU Internal Organisations The inputoutput IO interface bus structures microprocessor memories and peripherals also known as external or IO devices are the major components of a computer system These components constantly trade information and instructions to complete assigned operations With the exception of the peripherals the ongoing communication between components is conducted within the system through interconnections or paths called buses Peripherals such as keyboards add-in cards including frame grabbers monitors modems and printers are alternatively connected to the system through the IO interface The IO connection features a communication line to send and receive data between the system and peripherals Figure 1 illustrates the standard microprocessor-based PC architecture outlined above Note the peripherals link to the system through the IO interface rather than directly through the systems host bus The primary purpose of a systems host bus is to connect components and allow them to communicate To achieve this the host bus is composed of three types of communication lines An address bus is a one-way path that allows the microprocessor to specify which of the various locations in the memories and in the IO interface it is accessing Using this path the microprocessor can select a memory address from which to acquire or in which to store data The CPU also queries the IO interface and devices using the address bus to specify input and output locations A data bus carries the actual data between the microprocessor memories and the IO interface Because the data bus is bidirectional information can be both sent and received on these lines A control bus handles the arbitration and differentiation between data coming in and data going out of different components by transmitting read write and other control signals In evaluating bus architecture our primary concern is with transfers occurring on the data bus The data bus is responsible for moving the bulk of information that travels through a system And the
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA