Computer Organization – Basic Computer Instructions - GeeksforGeeks

Example: Branch if zero (BZ) or branch if not zero (BNZ). Call: Transfers control to a subroutine (a set of instructions performing a specific task) and returns afterward. Return: Brings back control to the main program after a subroutine is executed. Instruction Set of a Basic Computer

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Instruction Set (Opcode and Operand) IGCSE Computer Science

The table below shows an example instruction set. Each instruction has a mnemonic that indicates what the instruction does alongside an example binary code. After an instruction is decoded into an opcode and an operand, the CPU finds the opcode in the processor’s instruction set. It then knows what operation to perform when executing the ...

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What is an Instruction Set? - Computer Hope

An example of an instruction set is the x86 instruction set, which is common on computers today. Different computer processors can use almost the same instruction set with different internal designs. The Intel Pentium and AMD Athlon processors use nearly the same x86 instruction set.

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What is instruction set? - California Learning Resource Network

In this example, OP = 0x01 represents the opcode, R1 and R2 represent the destination and source registers, and #32 represents the immediates. Advantages and Disadvantages. The advantages of an instruction set include: • Efficient use of hardware resources: A well-designed instruction set can optimize the use of hardware resources, leading to faster performance.

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8051 Microcontroller Instruction Set & Addressing Modes - Electronics Hub

An Instruction Set is unique to a family of computers. ... destination register to which the constant data must be copied should be the same size as the operand mentioned in the instruction. Example: MOV A, #030H . Here, the Accumulator is loaded with 30 (hexadecimal). The # in the operand indicates that it is a data and not the address of a ...

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Basic Computer Instructions

Examples of Basic Instruction Execution. Example 1: ADD Instruction Consider the instruction ADD R1, R2. Fetch: The instruction ADD R1, R2 is fetched from memory. Decode: The CPU decodes the instruction to identify the operation (addition) and the operands (R1 and R2). Execute: The CPU adds the contents of R1 and R2, and stores the result in R1 ...

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Unit 3 8051 INSTRUCTION SET AND PROGRAMS, Electrical Engg 5th Semester ...

3.3.1. Data Transfer Instructions. These instructions are used to move data between registers, memory, and ports. MOV: Moves data from one location to another. Example: MOV A, #30h (Move the immediate data 30h into the accumulator). MOVX: Used for transferring data to/from external memory. Example: MOVX A, @DPTR (Move the data at the address pointed by DPTR into A).

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Instruction Set Architecture - Medium

Taking the same x86 ISA as an example, the INC instruction is only 1 byte long (this instruction just increases the value of a register by 1), whereas the instruction MOV [BX+DI+1234H], 5678Htakes ...

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8086 Instruction Set | GeeksforGeeks

The 8086 instruction Set finds an important part in today’s modern computing, providing strong support for software development. ... In case of immediate addressing, the operand is a constant value or immediate data that is part of the instruction itself. Example: MOV AX, 1234h - copies value 1234h into AX. Register Addressing.

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What Are Computer Instructions?

Essentially, for a computer to know how to do anything, it must be provided with proper instructions. For example, to draw a square, a CPU (Central Processing Unit) requires instructions telling it to produce four sides of equal lengths, connected at 90-degree angles. Example. Here is a set of instructions for Logo that would produce a square:

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