A Top-Level View Of Computer Function And Interconnection Chapter 3 Lecture 08 Faheem ahmad Lecturer, CNET Dept., Jazan University, Jazan KSA A Top-Level View Of Computer Function And Interconnection

Interconnection Structures The collection of paths connecting the various modules(CPU, memory, I/O) is called the interconnection structure. There are 3 modules of interconnection structure Book Page No 83-84

Memory 1.consists of N words 2.Operations: Read,write 3.location of operation is specified by address. Book Page No 83-84

I/O 1.consists of M ports. 2.Operations: Read , write 3.Sends interrupt signal to CPU Book Page No 83-84

CPU 1.CPU read data and instruction 2.writes data 3.uses control signal to control overall operation. Book Page No 83-84

From the above picture its clear that it supports the following types of transfers. Memory to CPU CPU to Memory I/O to CPU CPU to I/O Book Page No 83-84

Bus Interconnection A bus is a communication pathway connecting two or more devices. It is a shared transmission medium. Multiple devices connect to the bus, and a signal transmitted by any one device for all other devices attached to the bus. This concept can be understand from the following figure.

Bus Interconnection There are three buses [Data , Address & Control bus] Data bus, It carries data / instructions, Address bus, which identify the source or destination of data, Control bus, which is responsible for memory R/W signal, interrupt request and clock signals. Book Page No 85

Thank you!!! Chapter 3 Ends!!!