15.2.1. Unit Objective

We have to define it like that illustrate the execution of a program in a processor. So this is in Analysis level. That means, once you get a program then you will able to analyse exactly what task is performed by this particular program and how it is going to execute in a computer.

The first objective focuses on understanding how a program executes within a processor. It emphasizes the analysis of a program's operation, meaning that learners should be able to observe and break down the steps the processor takes when executing a program. This involves recognizing how the processor fetches and executes instructions sequentially. By the end of this, students should not only know that programs can be executed but also how the tasks are carried out step by step within the computer's architecture.

Imagine you are a chef following a recipe to prepare a dish. Each step in the recipe represents an instruction. You start by reviewing the ingredients (program) and then follow step-by-step instructions (execution) to combine them into the final meal (result). Just like the chef needs to understand each step to successfully make the dish, students need to comprehend how a program executes in a processor.

Objective 2 describe the format of Instruction. So, program is nothing but a set of instruction which will be executed in sequence. So, we are going to see; what is the format of instruction that we are having in the Instruction set of the processor.

The second objective centers on understanding the structure of instructions in a program. It explains that a program is essentially a sequence of instructions that the computer executes one after the other. Understanding the instruction format is crucial as it allows students to design their instruction sets for a processor effectively. They learn about how instructions are composed of operations and operands, which indicate what action should be taken and on what data, respectively.

Think of instructions like sentences in a storybook. Each sentence (instruction) has a structure: a subject (operation) and an object (operand). Just like how a story flows from one sentence to another, a program operates by executing one instruction after another. Understanding the structure of each sentence helps in crafting better stories, just as knowing instruction formats assists in writing effective programs.

Objective 3 explain different level of programming languages. So in a knowledge level just we are going to give information what are the different kinds of programming language we have in for computer programming.

The third objective introduces learners to the various levels of programming languages, which can be broadly categorized into high-level languages, low-level languages, assembly languages, etc. Understanding these categories helps students appreciate the abstraction and control each level offers. For example, high-level languages provide more abstraction and are closer to human languages, making them easier to write, while low-level languages offer more control over hardware but are more complex.

Consider programming languages like tools in a toolbox. A high-level programming language is like a power tool; it simplifies tasks and makes them easy for everyone to use. In contrast, a low-level programming language is like a manual tool; it requires more skill and knowledge but gives the user more control over the task at hand. Just as you would choose the right tool for a job, programmers select languages based on their needs and the task complexity.

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