This week on the blog: the followup: working through my (eventually) successful attempts to play good digital audio out of the ZX Spectrum's 1-bit beeper! Also some 10,000-ft looks at the prior art on the Spectrum and the Apple II to round it out. https://bumbershootsoft.wordpress.com/2026/09/26/digital-audio-on-the-zx-spectrums-1-bit-beeper/ #retrocomputing #zxspectrum #apple2