ARITHMETIC AND LOGIC UNIT, is responsible for carrying out comparisons, mathematic and logic calculations contained in programs, CONTROL UNIT, co-ordinates the transfer of data and the execution of instructions, REGISTERS, are areas of temporary storage used by the processor during calculations or operations, RAM, memory which can be read from and written to, ROM, memory which can only be read from, UNIQUE BINARY ADDRESS, every memory location has this, ADDRESS BUS, carries a memory address from the processor to the memory controller, allowing the processor to access a particular location in memory, DATA BUS, carries data or instructions to and from the processor and memory, INTERPRETER, translates source code one line at a time and reports errors immediately and is good for testing programs during development, COMPILER, translates source code all at once into machine code. it will not identify run-time or logic errors, but means the translator program is no longer needed to run the program, MACHINE CODE, all programs written in a high level language must be translated into this before a processor can run them.

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