4.7 - Computer Organisation and Architecture Flashcards
1
Q
Processor
A
Fetches, decodes and executes instructions that allow the computer to work.
2
Q
Main Memory
A
Stores data and instructions currently in use.
3
Q
Address Bus
A
Carries addresses from the CPU to main memory of locations that need to be accessed.
4
Q
Data Bus
A
Carries data to/from RAM.
5
Q
Control Bus
A
Carries control signals (e.g. memory read/write, clock, etc)
6
Q
I/O Controller
A
Device that acts as an interface between the processor and an I/O device.
7
Q
Stored Program Concept
A
Instructions are fetched, decoded and executed serially. Most common in standard PCs.
Also known as von Neumann architecture.
8
Q
Harvard Architecture
A
Separate memories and buses for data and instructions. Can be faster. Often used in embedded systems.
