Von Neumann Architecture Flashcards

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1
Q

Where does the data start in an FDE cycle?

A

Program Counter

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2
Q

Why is the PC set to :0 ?

A

0 is the first address

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3
Q

What does the control bus do?

A

Carries control instructions issued by the control unit

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4
Q

Where does the PC go next?

A

Memory Address Register

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5
Q

On what bus is the instruction sent?

A

Address Bus

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6
Q

The instructions go on the data bus to where?

A

Control Unit

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7
Q

What does the MDR hold?

A

Data

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8
Q

Where is the memory location loaded into?

A

The Accumulator

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9
Q

What does the accumulator do?

A

Temporarily stores data

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10
Q

Where does data go from the ALU?

A

Accumulator

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11
Q

Where does the address go?

A

Memory Address Register

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12
Q

Where does the address end up after MAR?

A

Memory Data Register

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13
Q

What does the control unit do?

A

. Decodes the instruction
. Controls where it goes

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14
Q

What does the Memory Address Register do?

A

Hold the address of the current data or instruction

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15
Q

What does the Memory Data Register do?

A

Holds the data from the memory that is currently in use

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16
Q

What does the Program Counter do?

A

Stores the address of the next instruction

17
Q

What does the accumulator do?

A

Temporarily stores data from the Arithmetic Logic Unit

18
Q

What does the Current Instruction Register do?

A

Holds instructions that are ready to be executed