The homework from week 5, just the SK-10 board solution.
SK-10 means a socket system with holes or pins spaced at 10 pins per inch. DIL IC’s have 0.1″ pin spacing and 0.3″ gutter width across the component, ie, pins 14 to pin 1 are opposite and 0.3″ spacing. Hence breadboards matching SK-10 specification have a gutter of 0.3″ in the centre of the board. (o.1″ = 2.54mm, 0.3″ = 7.62mm)