MARPLE on the Raspberry Pi Pico 2

These videos show MARPLE running on a Raspberry Pi Pico 2 via MicroPython. The workstation sends APL expressions over USB serial; the Pico evaluates them and returns results.

Demo 1: Primitive Functions and Operators

Arithmetic, vectors, matrices, reduce, scan, outer product, grade, encode/decode, and trig — all running on the Pico.

Demo 2: Direct Functions (Dfns) and the Rank Operator

Named dfns, guards, recursion (factorial, Fibonacci), default left arguments, and the rank operator applied to matrices and 3D arrays.

Demo 3: Namespaces and Standard Library

Qualified names ($::str::upper), #import directives, aliases, file I/O (nwrite/nread), and the i-beam operator for direct Python FFI.