Step-by-Step Cycle
Press "Next Step" to begin the cycle. We start by fetching the instruction from RAM.
Current Stage:
READY
Key Component Info:
Select a step to see how components like the ALU or CU are used.
Central Processing Unit
Prog. Counter
001
MAR
---
MDR
---
Accumulator
0
Control Unit (CU)
Decodes & Orchestrates
ALU
Calculations & Logic
Main Memory (RAM)
001: ADD #10
002: STR #005
003: HALT
BUS ARCHITECTURE
CPU Characteristics
OCR GCSE Explanation:
Clock speed is the frequency at which the internal clock generates pulses. Higher clock speed means more Fetch-Decode-Execute cycles are performed per second, increasing processing speed.OCR GCSE Explanation:
A core is a complete processing unit. Multiple cores allow for parallel processing, meaning several instructions can be executed at the same time.OCR GCSE Explanation:
Cache is small, super-fast memory on the CPU. It stores frequently used data/instructions. Larger cache means the CPU spends less time waiting for data from the slower RAM.Simulated Performance
0
Total FDE Cycles / Second