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Hardware Fundamentals > Expansion Buses > Flashcards

Expansion Buses Flashcards

1
Q

What is a Bus?

A

A collection of wires/tracks that transfer data or power between computer components

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2
Q

What are the seven charateristics of a bus

A

Clock speed, width, Bus performance, Control signals, Logical and physical connection, Internal and external and Serial and parallel.

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3
Q

What is clock speed

A

number of times a bit is sent alond the bus measures how quickly bits move along a bus

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4
Q

What is the width of a bus?

A

Number of data bits that can be sent along the bus at once ie 8, 16, 32 & 64 bits

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5
Q

How is bus performance measured?

A

Bus throughput is the number of bytes of data that can be transferred via the bus in one second.

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6
Q

How do you calculate a Buses throughput

A

Bus clockspeed times bus width

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7
Q

What information make up Bus control signals?

A

Which component the data is for, where blocks of data start and end and any other into related to the data.

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8
Q

What are the two different types of bus connections?

A

Logical connection - one to many, and Physical connection each bus defines its set of connectors

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9
Q

Whats the difference between an internal bus and an external bus?

A

An internal bus connects all the internal components of a computer to the motherboard. An external bus connects external peripherals to the motherboard.

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10
Q

Whats the difference between a serial and parallel bus?

A

Serial buses carry data in bit-serial form, parallel buses carry data words striped across multiple wires. which has a problem with crosstalk.

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11
Q

What is a BSB

A

Backside bus - The bus that connects the processor to the different levels of chache found on the processor chip.

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12
Q

What is a FSB

A

Front side bus The bus that connects the processor to different hardware components found on the motherboard.

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13
Q

What is an expansion bus?

A

A Collection of wires and protocols that allows the expansion of a computer by inserting printed circuit boards

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14
Q

What are the 8 different types of expansion bus?

A

PC Bus, ISA, MCA, EISA, VESA, PCI, AGP and PCI Express

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15
Q

What does ISA stand for?

A

Industry Standard Architecture - Used on 286 - pentium 4

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16
Q

What is the width and throughspeed of an ISA Bus?

A

16b and 8 Mhz

17
Q

What does MCA stand for?

A

Microchannel Architecture

18
Q

What happened to the MCA bus?

A

Discontinued due to not becoming popular.

19
Q

What was the difference between an MCA and an ISA bus?

A

MCA is twice the width of ISA but not compatible with ISA or PC Bus. Width 32b and speed 10 Mhz or 16 Mhz

20
Q

What is EISA

A

Extended Industry Standard Architecture

21
Q

What was EISA used on?

A

486s back in 1998

22
Q

What was the speed and width of the EISA bus?

A

speed 8.33Mhz and width 32b

23
Q

What does VESA stand for?

A

Video Electronics Standards Association

24
Q

What is a VESA bus?

A

Twice the width of ISA and ISA and PC Bus are backwards compatible with it. Used on 486s with a width of 32b and speed of 66 Mhz

25
Q

What does PCI stand for?

A

Peripheral Components Interconnect

26
Q

What is PCI 1.0?

A

Expansion Bus used on Pentium Motherboards. Supports plug n play. transfers data only on one edge of the clock signal.

27
Q

When was PCI 1.0 introduced?

A

1992

28
Q

What is the width and speed of the PCI 1.0

A

Width 32b and speed 33 Mhz

29
Q

What is PCI 2.0?

A

Faster and wider upgrade to PCI 1.0 width 64b and speed 66 Mhz. Backwards compatible with PCI 1.0

30
Q

What is the difference in slots between VESA and PCI?

A

VESA has a maximum number of 3 slots where PCI has a maximum 8-10 slots.

31
Q

Whats the difference in size between VESA and PCI?

A

VESA is long and is ISA and PC Bus compatible whereas PCI are shorter and more compact connector

32
Q

What does AGP stand for?

A

Accelerated Graphics Port

33
Q

When was the AGP port brought in?

A

1997 - used for Pentium 2 motherboards

34
Q

What is the AGP port used for?

A

Graphics card. speeds up 3D rendering and VR.

35
Q

What is the width and speed of the AGP port

A

width 32b. Speed 66Mhz

36
Q

What does PCIe stand for?

A

Peripheral Components Interconnect Express

37
Q

What computers use PCIe

A

Pentium 4 motherboards

38
Q

What protocol does PCIe use?

A

A packetised protocol.

39
Q

What does PCIe call point to point connections?

A

lanes

Hardware Fundamentals (11 decks)

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