Cache - Very fast memory close to the CPU , The Arithmetic Logic Unit - Completes calculations and performs logic operations, The Control Unit - Responsible for the flow of data inside the CPU , Registers  - Super fast memory inside the CPU - each having a specific purpose, Central Processing Unit  - Executes instructions stored in main memory - Fetch / Decode / Execute, Random Access Memory (Main Memory) - Storage location of program currently being executed, MDR - Register holding the data currently being processed, Clock speed - Determines how many instruction cycles the CPU can deal with in a second, 4.6GHz - Equivalent to 4.6 Billion Cycles per Second, ROM - Holds the boot-strap instructions needed to start the computer, STA 06 - Example of assembly language (Low Level), MAR - Register holding the address of the where data is to be read from or stored to, Program Counter - Holds the memory location of the next instruction to be fetched, 01000001 - Example of Machine Code (Low Level), Secondary Storage - Log term non-volatile storage, Solid State Drive - Robust because they contain no moving parts, Hard Disk Drive - An example of a magnetic storage device , Virtual Memory - Area of secondary storage used as extra RAM, Accumulator - Stores intermediate results of calculations, Embedded System - A computer built into another device. E.g Smart TV,

System Architecture

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