The Processor Flashcards
1
Q
What makes up the processor?
A
The ALU, control unit, system clock, general-purpose registers and dedicated registers
2
Q
Control unit
A
Controls the flow of data between the CPU and other devices
3
Q
Clock speed
A
The number of electrical cycles per second, in Hz. Operations in the CPU are synchronised to the clock pulse.
4
Q
Accumulator
A
A register that stores intermediate arithmetic results
5
Q
Name some dedicated registers
A
Memory address register Memory buffer register Program counter Current instruction register Status register
6
Q
What does the MAR do?
A
Takes the instruction given by the program counter and sends the address to main memory. It holds the memory location of data that needs to be accessed (either stored or fetched)
7
Q
What does the MBR do?
A
It stores data being transferred to and from main memory.
