Ken Shirriff's blog

During the Apollo missions to the Moon, a critical task for NASA was determining the spacecraft's position. To accomplish this, they d...

Many circuits, such as a computer power supply or a phone charger, require a stable voltage reference, but it's harder than you might e...

The IBM 1401 team at the Computer History Museum accumulates a lot of mystery components from donations and other sources. While going thr...

Apple's first product was the Apple-1 computer, introduced exactly 46 years ago, on April 11, 1976. This early microcomputer used an ...