An instruction cycle.
Control Unit
My ball sack
the ram
control unit
On start up the computer fetches information from BIOS. BIOS is a ROM. After that the computer loads OS from Hard disk into the RAM.
Different parts of instruction execution happen in different places:Control Unit - fetches, decodes, and distributes decoded instructions to other units.Arithmetic Logic Unit - performs arithmetic and logic instructions on command from Control Unit.Input/Output Unit(s) - performs input/output instructions on command from Control Unit.Memory Unit - stores instructions and data, transfers them to/from other units on command from Control Unit.
compiling program, compiler - (computer science) a program that decodes instructions written in a higher order language and produces an assembly language program
The basic computer has two parts: Random Access Memory (RAM) and a Central Processing Unit (CPU.) A microprocessor is a CPU that is built on a single chip. RAM is a place where many bytes are stored. One of the things that can be stored in RAM is a series of "instructions" that tell the CPU what to do. The series of instructions is called a "program." The CPU "fetches" one instruction from RAM, "executes" that instruction, then fetches and executes the next one, and so on. Exactly what the instructions in the program tell the computer to do determines how the computer will act at any given time.
difference between micro operation and microinstruction
Central Processing Unit is the main chip of computer. CPU fetches and executes instructions. CPU consists of an Arithmetic and Logic Unit (ALU), a control unit, registers and buses.
A microprocessor is the main part of a computer. It is the engine of a computer that has been created on only one chip. It stores data, moves data from one memory location to another, communicates with other parts of the computer, can do computations, and is controlled by assembly language instructions, that it fetches from some memory.
1) Fetch is the first of two stages involved in computer processing. The processor operates by processing instructions in what is called the "fetch/execute cycle." The processor fetches (reads from memory) an instruction and then, depending on the instruction, executes it (takes some further action with it, such as shifting bits to the right or left). Then it fetches the next instruction, and so forth.