1. 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

2. 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
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3. Memory 1.consists of N words 2.Operations: Read,write
3.location of operation is specified by address.
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4. I/O 1.consists of M ports. 2.Operations: Read , write
3.Sends interrupt signal to CPU
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5. CPU 1.CPU read data and instruction 2.writes data
3.uses control signal to control overall operation.
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6. 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
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7. 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.

8. 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.
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9. Thank you!!!
Chapter 3
Ends!!!