CPU Structure & Instruction Flashcards

CPU, Instruction Cycle

What is a CPU?

brain of the computer

What are the main components inside a CPU?

Control Unit, ALU, and Registers.

What is a bus?

Bus moves data between components.

What does the ALU do?

ALU does math and logic operations.

What is the Control Unit?

It controls and manages all CPU actions

What are registers?

Registers store small data inside the CPU

What is cache memory?

Cache is fast memory for quick access

What is the instruction cycle?

Steps used by CPU to run instructions

What is an interrupt?

Interrupt stops CPU for urgent tasks.

What is a Program Counter (PC)?

PC stores the next instruction address

What is fetch?

Fetch gets instruction from memory

What is decode?

Decode means understanding the instruction

What is execute?

Execute means doing the instruction.

Why are registers important in a CPU?

Registers store data temporarily for fast access.

What is the difference between RISC and CISC?

RISC uses simple instructions
CISC uses complex instructions

What is a pipeline hazard?

A pipeline hazard causes delay in CPU processing

What is machine cycle time?

It is the time needed to process one instruction

What is pipelining?

CPU processes many steps at the same time

What is latency in CPU?

Time needed to complete a task

What is CPU bottleneck?

CPU is too slow for the system