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Thus, programs must go from memory to the CPU where it can be executed. Programs The instruction is fetched from (physical) memory, i.e. RAM. Here are
All computer software is built up of sets of instructions. Instructions are encoded in binary. The fetch-decode-execute cycle is the sequence of steps that the CPU
1 May 2014
Machine code and processor instruction set, The Fetch–Execute cycle and the fetched from memory; Control Unit (CU) - decodes the program instruction in
?MAR ? means the memory register whose address is given by the MAR. The MAR is said to point to the memory location. 2.2 The Fetch, Decode, Execute Cycle.
The following is a summary of the six steps used to execute a single instruction. Step 1: Fetch instruction. Step 2: Decode instruction and Fetch Operands. Step 3: Perform ALU operation. Step 4: Access memory. Step 5: Write back result to register file. Step 6: Update the PC.

An instruction cycle (sometimes called a fetch–decode–execute cycle) is the basic operational process of a computer. It is the process by which a computer retrieves a program instruction from its memory, determines what actions the instruction dictates, and carries out those actions.
It is called the Fetch - Decode - Execute cycle or sometimes simply called the The first step the CPU carries out is to fetch some data and instructions (program)
8 Apr 2013

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February 2018