#cprograming

[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:

[praveennareshit]

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[tccicomputercoaching]

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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.

[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! 🔥

[manmishra]

C Program for Matrix Multiplication: A Beginner’s Guide with Examples & Practice

Learn how to perform matrix multiplication in C with our beginner-friendly guide. Explore step-by-step code examples, dynamic memory allocation techniques, and real-life applications in computer graphics and data science. Perfect for novice programmers looking to boost their coding skills!

Matrix multiplication is a cornerstone of programming, used in graphics, data science, and engineering. If you’re learning C, mastering this concept will boost your coding skills. In this guide, we’ll break down matrix multiplication in C using simple language, practical code examples, and real-life applications. Let’s get started!What is Matrix Multiplication? Matrix multiplication involves…

[sainichanchal]

Fundamentals of C Programming: A Beginner’s Guide

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[suresh1407]

Best Way to Learn C Programming Languages or any languages. This tutorials is best for beginners who wanted to learn somethign new or any new languages. In this content given point suites for all langauges. A must read content for beginners. https://thecrazydev.com/blogs/best-way-to-learn-c-programming-for-beginners

[arshikasingh]

Flowchart of for loop in C

Let us see the flowchart of for loop in C:

[praveennareshit]

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[tccicomputercoaching]

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