#systems

CPU; Central Processing Unit

ISAs Each processor has its own ...

CISC : an architecture complex RISC : less complex, comme ARM

ARM : is the architecture is the arc. used in mobile devices because of the low power consomnation M1 and M2 sont des processeurs avec l'architecture ARM aussi

Fugaku 415-PFLOPS of Fujitsu is one of the best calculators but uses ARM.

1 hertz : 1 cycle per second 1 megahertz : 1000 cycle per second

Register: extremely temporary memory, cache inside the CPU, closed to the control unit, closer than RAM

Control unit manages all inside the CPU ALU actually is what performs, executes the operation inside the CPU (Arithmetic Logic Unit)

A CPU always does these 3 processes; 1- fetch
2- decode
3- execute (it's a cycle when this 3 is done)

Execute; ![[Capture d’écran 2024-02-20 155933.png]] x86

A comment from Youtube: "Computer Science is just a field of abstractions. Starting from the lowest level, which is Physics, Mathematics, properties of Electrons, and Atoms, physical properties of silicon, semi-conductors, to hardware architecture, different Electronic components, and units, and how they are synchronized, to machine code instructions, to assembly language, to compilers, and programming languages, to what you see on your screen. It's amazing, how Humans have made this device, just by understanding the Mathematics, and Physics of Atoms and electrons. I salute all those geniuses who have made this modern world possible with their great minds."

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