Editing The Von Neumann Architecture (section)

== <span style="color: #FFFFFF;">Applying</span> ==
'''Modeling 'The Fetch-Execute Cycle' (Visualizing how a CPU processes a 'Stored' program):'''
<syntaxhighlight lang="python">
def cpu_cycle(memory, registers):
    """
    Simulates the Fetch-Decode-Execute cycle.
    """
    pc = 0 # Program Counter
    while pc < len(memory):
        # 1. FETCH
        instruction = memory[pc]
        
        # 2. DECODE & EXECUTE
        command, val = instruction.split(" ")
        if command == "LOAD":
            registers["A"] = int(val)
        elif command == "ADD":
            registers["A"] += int(val)
        elif command == "STORE":
            print(f"STORED Result: {registers['A']}")
            
        pc += 1 # Increment to next instruction
        
# Program stored in memory: [LOAD 10, ADD 5, STORE 0]
mem = ["LOAD 10", "ADD 5", "STORE 0"]
regs = {"A": 0}
cpu_cycle(mem, regs)
</syntaxhighlight>

; Architecture Landmarks
: '''ENIAC (1945)''' → The first "General Purpose" computer, but it was **NOT** Von Neumann (it had to be rewired by hand).
: '''Manchester Baby (1948)''' → The first-ever "Stored-Program" computer to successfully run a program, proving Von Neumann was right.
: '''Intel 4004 (1971)''' → The first "Microprocessor," which put the whole Von Neumann CPU on a "Single Chip," making PCs possible.
: '''GPU (Graphics Processing Unit)''' → A "Non-Von Neumann" helper. While a CPU is a "Master of One" (Serial), a GPU is a "Master of Thousands" (Parallel), doing millions of tiny math problems at once.
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