Day 01Part 04- Operating sysytem for computer-Who executes the Program and where program is resides.<\/p>\n
[fvplayer id=”353″]<\/p>\n
A program<\/strong> is a set of instructions written to perform a specific task. To execute a program, the Operating System (OS)<\/strong> manages its loading, execution, and termination. But where does a program reside, and who executes it? Let\u2019s break it down.<\/p>\n Before execution, a program is stored in secondary memory (HDD, SSD, or external storage).<\/strong> When a user runs a program, the OS loads it from secondary storage into RAM.<\/strong> \u00a0Some frequently used instructions are stored in CPU Cache<\/strong> to speed up execution. \u00a0The CPU fetches, decodes, and executes<\/strong> instructions of a program. \u00a0The OS acts as a manager<\/strong>, handling: User clicks to open a program<\/strong> (e.g., a browser). Programs reside in secondary storage (HDD\/SSD) and move to RAM during execution.<\/strong> \u00a0Want to learn more about process management or scheduling in OS? Let me know!<\/strong><\/p>\n Here\u2019s a clear explanation for Operating System \u2013 Day 01, Part 04<\/strong>, covering who executes a program<\/strong> and where the program resides<\/strong> in a computer system:<\/p>\n The CPU (Central Processing Unit)<\/strong> is responsible for executing the program.<\/p>\n It fetches<\/strong>, decodes<\/strong>, and executes<\/strong> instructions.<\/p>\n<\/li>\n The Operating System (OS)<\/strong> manages the CPU’s scheduling and decides which program gets to run next.<\/p>\n<\/li>\n<\/ul>\n Programs initially reside on the hard disk or SSD<\/strong>, but to be executed, they must be loaded into main memory (RAM)<\/strong>.<\/p>\n Steps:<\/strong><\/p>\n Program stored on storage device (e.g., OS loads the program into RAM<\/strong><\/p>\n<\/li>\n CPU fetches instructions from RAM and begins execution<\/p>\n<\/li>\n<\/ol>\n Storage (HDD\/SSD)<\/strong>: Long-term location<\/p>\n<\/li>\n Main Memory (RAM)<\/strong>: Temporary execution location<\/p>\n<\/li>\n CPU<\/strong>: Executes instructions one by one<\/p>\n<\/li>\n OS<\/strong>: Manages loading, memory, and execution control<\/p>\n<\/li>\n<\/ul>\n Would you like a diagram of this flow<\/span>, step-by-step execution example<\/span>, or intro to process management<\/span>?<\/p>\n Day 01Part 04- Operating sysytem for computer-Who executes the Program and where program is resides. [fvplayer id=”353″] Operating System for Computers \u2013 Day 01, Part 04 Who Executes the Program and Where Does the Program Reside? \u00a0Introduction A program is a set of instructions written to perform a specific task. To execute a program, the […]<\/p>\n","protected":false},"author":66,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"class_list":["post-3324","post","type-post","status-publish","format-standard","hentry","category-operating-system"],"_links":{"self":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts\/3324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/users\/66"}],"replies":[{"embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/comments?post=3324"}],"version-history":[{"count":0,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts\/3324\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/media?parent=3324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/categories?post=3324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/tags?post=3324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u00a0Where Does a Program Reside?<\/strong><\/h3>\n
1. Storage (Secondary Memory – Hard Disk, SSD, etc.)<\/strong><\/h3>\n
\u00a0Example: Applications like MS Word, Chrome, or a game are stored as files on the hard disk.<\/p>\n2. RAM (Primary Memory – Temporary Storage During Execution)<\/strong><\/h3>\n
Why?<\/strong> Because RAM is much faster<\/strong> than a hard drive and provides quick access for the CPU.
\u00a0Example: When you open a browser, the program moves from disk to RAM.<\/p>\n3. CPU Cache (Temporary Fast Memory)<\/strong><\/h3>\n
Why?<\/strong> Cache memory is faster<\/strong> than RAM and reduces the CPU’s waiting time.<\/p>\n\u00a0Who Executes the Program?<\/strong><\/h3>\n
1. CPU (Central Processing Unit – The Brain of the Computer)<\/strong><\/h3>\n
\u00a0The Control Unit (CU)<\/strong> directs the operation, while the Arithmetic Logic Unit (ALU)<\/strong> performs calculations.<\/p>\n2. Operating System\u2019s Role in Execution<\/strong><\/h3>\n
Process scheduling<\/strong> \u2013 Decides which program runs and for how long.
Memory management<\/strong> \u2013 Allocates RAM to active programs.
Resource allocation<\/strong> \u2013 Assigns CPU, disk, and input\/output devices.<\/p>\n\u00a0Step-by-Step Execution Process<\/strong><\/h3>\n
The OS loads the program from storage into RAM.<\/strong>
CPU fetches and processes instructions<\/strong> from RAM.
Execution continues until the program is closed or task is completed.<\/strong>
The OS clears memory<\/strong> after execution to free up resources.<\/p>\nConclusion<\/strong><\/h3>\n
The CPU executes the program with the help of the OS.<\/strong>
The OS plays a crucial role in managing memory, CPU scheduling, and execution.<\/strong><\/p>\nDay 01Part 04- Operating sysytem for computer-Who executes the Program and where program is resides.<\/a><\/h3>\n
iv semester cs3451-introduction to operating systems<\/a><\/h3>\n
Installation and Configuration of Operating System<\/a><\/h3>\n
UNIT-I Operating Systems Functions<\/a><\/h3>\n
Operating-System.pdf<\/a><\/h3>\n
\n\ud83d\udda5\ufe0f Operating System Basics \u2013 Program Execution<\/strong><\/h2>\n
\ud83d\udd04 Who Executes the Program?<\/strong><\/h3>\n
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\n\ud83d\udccd Where Does the Program Reside?<\/strong><\/h3>\n
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.exe<\/code> file on HDD\/SSD)<\/p>\n<\/li>\n
\n\ud83d\udd27 In Summary:<\/strong><\/h3>\n
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\nDay 01Part 04- Operating sysytem for computer-Who executes the Program and where program is resides.<\/a><\/h3>\n
I UNIT \u2013 I- SCS1301- OPERATING SYSTEM<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"