ch4_MicroProcessors Flashcards
What is a registrar
Worktables, tiny storage areas, that are 16 bits wide, on the CPU that hold charged binary commands.
What are the core CPU components?
Speed External Data Bus Address Bus CPU Code book = Machine Language Registrar
What is the External Data Bus
Used to communicate from the CPU and the RAM
What is the Address Bus
Enables the CPU to communicate with the MCC
How does the CPU represent commands
On or Off, 1 or 0
What are the four general purpose registrars
AX BX CX DX
What is the Clock Wire
The clock wire tells the CPU that there is another piece of data waiting to be processed. It may take many cycles for the data to be processed.
1 Hz = 1 cycle
What is a Clock Cycle
The voltage that must be applied to the CLK wire
What is the clock speed?
the max number of clock cycles
What determines the speed
The system crystal, quartz oscillator
How does RAM work
Like a spreadsheet, each line of memory is addressed and holds either a 1 or 0.
How does RAM stay charged
DRAM is charged by the semiconductors on the RAM stick
How is data handled on the RAM
MCC grabs the contents of any line of RAM to place on the EDB.
How do the CPU and MCC communicate
Address Bus
Why does the number of wires on the address bus matter?
The number of wires is equal to the amount of RAM that the CPU can handle
Which line of CPU is meant for the enthusiast/main stream build (Intel and AMD)?
Intel = Core i7 AMD = A Series or FX
Which CPU is recommended for the budget PC
Intel = Pentium or Celeron AMD = Sempron or Athlon
Which CPU is recommended for the Portable/Mobile CPU
Intel = Core M AMD = Atom A Series
What CPU is recommended for a server
Xeon or Opteron
What are the 8 features of CPUs
Clock Multiplier 64 or 32 bit processing Virtualization Support Parallel Execution Multicore Processing Integrated MCC Integrated Graphics Security
What does the clock multiplier mean
CPU can run at a multiple of the clock speed
What is pipelining
Get a command from data bus, calculate, sed result or Fetch Decode Execute write
What would stall a computer
If teh RAM speed doesn’t match the CPU speed
Why is a cache important
Static RAM inside the CPU preloads instructions
