In an era dominated by cutting-edge technology, it’s easy to overlook the educational potential of older hardware like the 32-bit Raspberry Pi 2 running Raspberry Pi Lite OS. However, these devices remain powerful tools for teaching and learning foundational programming concepts, algorithms, and computational thinking. The provided Rust program for computing additive primes showcases how such hardware can be effectively utilized in educational settings.
The Rust program:
Calculates prime numbers up to a specified limit (500 in this case).
Filters those primes to identify additive primes—primes whose digits sum to another prime number.
Displays the additive primes in a formatted manner, printing 10 values per line and providing a summary
Using a 32-bit Raspberry Pi 2 for tasks like additive prime calculation demonstrates the enduring value of legacy hardware in education. It allows students to:
Engage with computational problems in a cost-effective and practical way.
Develop an appreciation for efficient programming.
Build foundational skills in mathematics, computer science, and systems engineering.
This approach is not just about nostalgia for older devices; it’s about recognizing their role as accessible, versatile platforms for fostering curiosity and innovation in the next generation of learners.Code:
ubu@raspberrypi:~/aprime/src $ ubu@raspberrypi:~/aprime/src $ cd ..ubu@raspberrypi:~/aprime $ cargo run Compiling aprime v0.1.0 (/home/ubu/aprime) Finished dev [unoptimized + debuginfo] target(s) in 13.54s Running `target/debug/aprime` 2 3 5 7 11 23 29 41 43 47 61 67 83 89 101 113 131 137 139 151 157 173 179 191 193 197 199 223 227 229 241 263 269 281 283 311 313 317 331 337 353 359 373 379 397 401 409 421 443 449 461 463 467 487---Found 54 additive primes less than 500ubu@raspberrypi:~/aprime $ neofetch `.::///+:/-. --///+//-:`` ubu@raspberrypi `+oooooooooooo: `+oooooooooooo: --------------- /oooo++//ooooo: ooooo+//+ooooo. OS: Raspbian GNU/Linux 12 (bookworm) armv7l `+ooooooo:-:oo- +o+::/ooooooo: Host: Raspberry Pi 2 Model B Rev 1.1 `:oooooooo+`` `.oooooooo+- Kernel: 6.6.51+rpt-rpi-v7 `:++ooo/. :+ooo+/.` Uptime: 5 hours, 59 mins ...` `.----.` ``.. Packages: 881 (dpkg) .::::-``:::::::::.`-:::-` Shell: bash 5.2.15 -:::-` .:::::::-` `-:::- Terminal: /dev/pts/0 `::. `.--.` `` `.---.``.::` CPU: BCM2835 (4) @ 900MHz .::::::::` -::::::::` ` Memory: 60MiB / 920MiB .::` .:::::::::- `::::::::::``::.-:::` ::::::::::. ::::::::::.`:::-:::: -::::::::. `-:::::::: ::::-::- .-:::-.``....``.-::-. -::- .. `` .::::::::. `..`.. -:::-` -::::::::::` .:::::` :::::::` -::::::::::` :::::::. .::::::: -::::::::. :::::::: `-:::::` ..--.` ::::::. `...` `...--..` `...` .:::::::::: `.-::::-`Code:
fn main() { let limit = 500; let column_w = limit.to_string().len() + 1; let mut pms = Vec::with_capacity(limit / 2 - limit / 3 / 2 - limit / 5 / 3 / 2 + 1); let mut count = 0; for u in (2..3).chain((3..limit).step_by(2)) { if pms.iter().take_while(|&&p| p * p <= u).all(|&p| u % p != 0) { pms.push(u); let dgs = std::iter::successors(Some(u), |&n| (n > 9).then(|| n / 10)).map(|n| n % 10); if pms.binary_search(&dgs.sum()).is_ok() { print!("{}{u:column_w$}", if count % 10 == 0 { "\n" } else { "" }); count += 1; } } } println!("\n---\nFound {count} additive primes less than {limit}");}
Statistics: Posted by geev03 — Fri Nov 29, 2024 4:36 pm