ZX OCR-A A liberal adaptation of OCR-A.
American Type Founders designed the OCR-A font in 1968 to aid machines in recognizing the characters optically long before advanced OCR technologies were available. The goal was to be both machine and human-readable, and it was a great success and is still used today in a variety of places despite being followed by the more human-friendly OCR-B.
I created this liberal adaptation on the Sinclair Spectrum +3 using Artist II in the late 1980s. The distinctive style shines through even at this tiny size.
This font works well if you want a dated view of technological progress.