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Computer buses
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- 1A BUSis a collection of electrical conductors (lines)
to which components may be connected
for the transmission of signals between them. - 2TYPES OF BUSES LOCATION (Where they are)1. INTERNAL: within the processor, necessary to integrate each part of the CPU. E.g. CU & ALU
2. EXTERNAL: outside the processor to connect separate hardware components. - 3Types of buses: FUNCTION (What they do)1. Data bus:
Transfers signals, representing data, between storage and devices.
2. Address bus:
Transfers signals, representing information about where the data should go
3. Control bus:
Transfers signals, representing control values - 4Bus width or BandwidthThe number of LINES in bus is called a ...
- 5DATA BUS* is equal to the register wordsize
- 6ADDRESS BUSthe number of lines (wires) in the address bus determines the amount of memory that can be directly addressed as each line carries one bit of the address.
e.g one that has 32 address lines can address 4GB.
2x 2x 2x 2 x [4 lines] = 16 memory location/ address - 7DATA BUS AND ADDRESS BUS ARE LARGER THAN A CONTROL BUSwhich two is larger than a control bus?
- 8Simplex: ONE DIRECTION ONLY Half Duplex: TWO DIRECTION AT THE SAME TIME Duplex: TWO DIRECTIONS BUT not AT THE SAME TIMESignals OF BUSES can be sent in any of the following three ways
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- Fichas sobre Computer buses, creado por Althea Baptiste el 28/11/2014.
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- Althea Baptiste
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