#CProgramming

[adafruit]

🎄💾🗓️ Day 4: Retrocomputing Advent Calendar - The DEC PDP-11! 🎄💾🗓️

Released by Digital Equipment Corporation in 1970, the PDP-11 was a 16-bit minicomputer known for its orthogonal instruction set, allowing flexible and efficient programming. It introduced a Unibus architecture, which streamlined data communication and helped revolutionize computer design, making hardware design more modular and scalable. The PDP-11 was important in developing operating systems, including the early versions of UNIX. The PDP-11 was the hardware foundation for developing the C programming language and early UNIX systems. It supported multiple operating systems like RT-11, RSX-11, and UNIX, which directly shaped modern OS design principles. With over 600,000 units sold, the PDP-11 is celebrated as one of its era's most versatile and influential "minicomputers".

Check out the wikipedia page for some great history, photos (pictured here), and more -

And here's a story from Adafruit team member, Bill!

The DEC PDP-11 was the one of the first computers I ever programmed. That program was 'written' with a soldering iron.

I was an art student at the time, but spending most of my time in the engineering labs. There was a PDP-11-34 in the automation lab connected to an X-ray spectroscopy machine. Starting up the machine required toggling in a bootstrap loader via the front panel. This was a tedious process. So we ordered a diode-array boot ROM which had enough space to program 32 sixteen bit instructions.

Each instruction in the boot sequence needed to be broken down into binary (very straightforward with the PDP-11 instruction set). For each binary '1', a diode needed to be soldered into the array. The space was left empty for each '0'. 32 sixteen bit instructions was more than sufficient to load a secondary bootstrap from the floppy disk to launch the RT-11 operating system. So now it was possible to boot the system with just the push of a button.

I worked with a number DEC PDP-11/LSI-11 systems over the years. I still keep an LSI-11-23 system around for sentimental reasons.

Have first computer memories? Post’em up in the comments, or post yours on socialz’ and tag them #firstcomputer #retrocomputing – See you back here tomorrow!

[arshikasingh]

Example of for loop in C

Let us see the Example of for loop in C:

[dotnetinstitute]

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[youngstarfarerentity]

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[researchscientist123]

Boron Carbide Nanoparticle Toxicity

Boron carbide (B₄C) nanoparticles exhibit promising industrial and biomedical applications, but their toxicity assessment is crucial. In C programming, simulation and modeling techniques are used to evaluate nanoparticle interactions with biological systems, enabling the analysis of cytotoxicity, oxidative stress, and bio-distribution at the cellular level.

International Research Scientist Awards

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[sreeusha]

Understanding Identifiers in C Programming

If you're starting out with C programming, one of the essential concepts you’ll encounter is identifiers. They’re the names you give to variables, functions, arrays, and other elements in your code. Choosing proper identifiers makes your code more readable and maintainable.

Want a clear and detailed explanation with examples?

👉 Check out this comprehensive guide on Identifiers in C.

[tccicomputercoaching]

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[praveennareshit]

🚀 Free C Language Course!

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[asadmukhtarr]

"The C Programming Language" by Brian W. Kernighan and Dennis M. Ritchie, often referred to as "K&R C," is one of the most influential books in the field of computer science. It serves as both a tutorial for beginners and a reference for experienced programmers. The book covers the core features of the C programming language, along with advanced topics, making it a valuable resource for anyone looking to master C. Below is a user-friendly, step-by-step breakdown of the key outcomes and takeaways from the book, designed to help readers understand and apply C effectively.

[arshikasingh]

Flowchart of for loop in C

Let us see the flowchart of for loop in C:

[dotnetinstitute]

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[tekkybuddy]

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[pythonfullstackmasters]

🚀 Python vs Other Languages! 🤯

Ever wondered what makes Python different from other programming languages? 🤔 Let’s break it down in a fun way! 🔥 Each language has its strengths 💪, but Python remains a top choice for its simplicity and powerful libraries! 🐍✨ Want more such insights? Follow @brollyacademy @pythonfullstackmasters.in for daily programming tips! 🔥