Those who learned #computing in the 1970s and 1980s—from the signal-level up, on trainers like KIM-1 or Heathkit ET-3400—often get the urge to stroll down Memory Lane, the full 256-byte length of it. They need not spend thousands of dollars on eBay to purchase a beaten, broken, fifty-year-old trainer; they could just grab the wonderful Black Pill #STM32 F411 Cortex board on #AliExpress for $0.99.
https://shorturl.at/mfFxd
https://www.st.com/en/microcontrollers-microprocessors/stm32f411.html
Or, try the fabulous #ESP32 C3 RISV-V board, with an OLED display, WiFi, and BLE for the same amount of money.
https://shorturl.at/BHZ7r
https://www.espressif.com/en/products/socs/esp32-c3
These thumb-sized #MCU boards are more capable than the 1980s room-sized super-minicomputers. The F411, for example, has a 32-bit 100 MHz Cortex-M4F with FPU, 256 KB SRAM, and 512 KB Flash.
These boards can be programmed in assembly or the usual assortment of open-source, higher-level #programming languages, like Forth, C, C++, Go, Rust, Zig, Ada, etc., and even Processing, Python, and JavaScript.
A good selection of open-source #RTOS are available, too: FreeRTOS, Zephyr, ChibiOS, and the like.
Go ahead; by a bucket load of MCU boards from AliExpress, relive those happier simpler times, and simultaneously buck the stupid #tariffs.
Kale 



