2. bus is a subsystem that transfers data
between components inside a
computer, or between computers.

3. Two type of buses
a bus located strictly within a CPU chip for
communications among the components in a
CPU chip
Internal bus

4. External Bus

5. • This is the highest-level bus that the
chipset uses to send information to
and from the processor
Processor
Bus (System
Bus)
• Higher-level architectures, employ a
dedicated bus for accessing the
system cache
Cache Bus
(Backside
Bus)
• Second-level system bus that
connects the memory subsystem to
the chipset and the processor
Memory
Bus
Bus Hierarchy

6. • For example, video cards, etc
• The two most common local
I/O buses are the VLB and
PCI.
The Local I/O
Bus (High-speed
I/O Bus)
The illustration
shows how the
various buses
connect to the
CPU.

7. 1-Data and Address
Buses
2-Bus
Bandwidth
3-Bus Width
4-Bus
Width
4 Characteristics of Bus

8. wide array of
integrated
technologies on it, as
it has multiple buses
(ISA, PCI and AGP
to name a few)
onboard
The ISA slots are the black
slots on the lower portion of
the board in the image
Standards Bus Architecture

9. A-Industry
Standard
Architecture
(ISA) Bus
B-Micro
Channel
Architecture
(MCA) Bus
C-Extended
Industry
Standard
Architecture
(EISA) Bus
D-VESA
Local Bus
(VLB)
E-Peripheral
Component
Interconnect
(PCI) Local
Bus
Bus standard
F-
Accelerate
d Graphics
Port (AGP)