Architecture Flashcards
For Computer and CPU.
Serial buses
Sends a single bit
High frequency
Low/Few traces
Parallel busses
Sends multiple bits
Low frequency
High/More traces
Control Bus is a collection of what?
A collection of signals from the processor which controls the system
Signals on this may be timing signals
The processor uses the Address Bus . . .
The processor uses this to select a chip and where to use it
Data Bus carries . . .
Carries data between processor, memory unit, and I/O devices
Internal or local Data Busses
Connects the components of the motherboard
External data buses
Connects the motherboard to every other device
Von-Neuman Architecture, AKA Princeton Architecture
Program instructions and data stored in the same memory, which is accessed by the same bus.
Can’t read instructions and read/write data.
Harvard Architecture
Program instructions and data stored separately, which is accessed by separate buses.
Instructions are a set of what?
A set of machine language commands that guide the CPU on what to do next
Memory Address Register
Links internal buses to external Address Bus.
All Addresses pass through this.
Memory Data Register
Links internal buses to external data bus.
All data is passed though this.
Arithmetic and Logic Unit
Performs maths and logical operations, like addition, XOR, etc.
Instruction Register
Holds what to do
Control Unit
Figures out how to do it
