Discuss types of system buses.
Different
types of system buses are as follows:
Data
Bus
Data
bus is the most common type of bus. It is used to transfer data between
different components of computer. The number of lies in data bus affects the
speed of data transfer between different components. The data bus consists of
8, 16, 32, or 64 lines. A 64- lines data bus can transfer 64 bits at one time.
The
data bus lines are bi-directional. It means that:
CPU
can read data from memory using these lines
CPU
can write data to memory locations using these lines
Address
Bus
Many
components are connected to one another through buses. Each component is
assigned a unique ID. This ID is called the address of that component. If a
component wants to communicate with another component, it uses address bus to
specify the address of that component. The address bus is a unidirectional bus.
It can carry information only in one direction. It carries address of memory
location from microprocessor to the main memory.
Control
Bus
Control
bus is used to transmit different commands or control signals from one component
to another component. CPU wants to read data from main memory .It will use
control bus to send the memory read command to the main memory of computer. The
control bus is also used to transmit control signals like ACKS (
Acknowledgement signals)
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