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How do programs work on a computer? (Part 1/2)

Let's take a very simple program for understanding how this system works. The following example is a very basic C code that assigns 2 variables (x and y) and then adds them to generate a value 'z'.  Note: We do not output anything in this program void main() { int x = 3; int y = 4; int z = x + y; } But we have a pressing question. Computers inherently work on electronics and logic, so how does it understand and execute the program? The answer is not very simple and you have to bear with me through a tiny journey. Basic Logic Circuits Let's first begin with a very basic Circuit which implements AND logic and OR logic (skip if you are familiar)  As seen in the circuits above, for the left circuit, the LED lights up only when both switches are on. This is AND logic as "Switch 1 AND Switch 2 need to be on". In the circuit on the right, either of the switch will switch on the LED. Note that in the ...
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Introductions




Hey! Welcome to "Root Access"!

Before we get to the complicated stuff, I want to introduce myself and this blog.

Well, I am a 2020 graduate who jumped into the network industry. My first (and current) job is as a Software Engineer in the Office of the CTO (fondly called OCTO) at F5 Networks Innovation Pvt Ltd. The projects that are undertaken here involve a broad range of the latest and next-generation technologies. Jargons like WebAssembly, SmartNIC, DDoS protection, eBPF, DPDK etc., are what you may hear every day! And it's pretty easy to get lost in all of these.

Coming to this blog, I chose the name "Root Access" because it's a pun on my name. Also, because this blog (hopefully) provides you with a good enough introduction to techno-babble that you can then have the skill (privilege) to access the more profound knowledge. But mostly because it's a pun.

This blog will mostly contain posts that explain the latest or complicated technologies from scratch and hopefully help you understand the latest industry jargon.

NOTE: These posts are a compilation of my understanding of the technology. I am no expert, and as such, these blogs may not be 100% accurate. Please let me know if you find any corrections or have suggestions.

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How do programs work on a computer? (Part 1/2)

Let's take a very simple program for understanding how this system works. The following example is a very basic C code that assigns 2 variables (x and y) and then adds them to generate a value 'z'.  Note: We do not output anything in this program void main() { int x = 3; int y = 4; int z = x + y; } But we have a pressing question. Computers inherently work on electronics and logic, so how does it understand and execute the program? The answer is not very simple and you have to bear with me through a tiny journey. Basic Logic Circuits Let's first begin with a very basic Circuit which implements AND logic and OR logic (skip if you are familiar)  As seen in the circuits above, for the left circuit, the LED lights up only when both switches are on. This is AND logic as "Switch 1 AND Switch 2 need to be on". In the circuit on the right, either of the switch will switch on the LED. Note that in the ...
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