Dedication 献身精神

To my dad (1947–2007), architect and self-taught programmer, who got me started on this path.
致我的父亲(1947-2007),建筑师和自学成才的程序员,是他让我开始走上这条路。

My dad, my two-and-a-half-year-old self, and the ZX81.
My earliest documented program ever, written at six-and-a-half years old, drew some lines on the screen of my ZX Spectrum+.