presentation on Bus and memory transfer.Computer organization

1. Bus and Memory Transfer
Presented by:
Rishi Ram Khanal
BIM III (TU)
1081
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2. Items
 Why???
 Bus
 Using multiplexer
 Bus system for four register
 Three state bus buffer
 Bus line with three state buffer
 Memory transfer
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3. Why???
 A typical digital computer has many register and paths must
be provided to transfer information from one register to
another .
 The number of wires will be excessive if separate lines are
used between each register and all other registers in
the system.
 A more efficient scheme for transferring information
between registers in a multiple register configuration is a
common bus system.
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4. BUS
 Bus is a single shared set of wires connecting all registers.
 A bus structure consists set of a common lines each for each registers,
through which binary information can transfer one at a time.
 Control signal determine that which register is connected with bus line at
a time to transfer information.
 Here, we will see the two ways to construct the bus:
i. By using multiplexers and
ii. By using three state buffer.
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6. Bus system for four register with four bits
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7. 1
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8. Bus line with three state-buffers
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