Source Code covers Bill Gates's life from his childhood through the early days of Microsoft.

True if Source Code (Gates's memoir) as published covers his life from childhood through Microsoft's early years (roughly the late 1970s to around 1980), as shown by its contents or by publisher descriptions and reviews. Mostly true if the coverage roughly matches but the end point differs a little, e.g. it runs a few years beyond the founding era. Mixed if it covers only one of the two (childhood or early Microsoft) in a substantial way. Mostly false if its main span is quite different and touches these periods only briefly. False if the book covers a wholly different period, or if no such book by Gates exists.

Set before the research began.

1. E1 Bill Gates’ book ‘Source Code’ is a surprisingly candid memoir of the Microsoft mogul’s early years GeekWire · 3 February 2025

   “It ends in a cliffhanger in 1979, just before Gates and Allen return home with their rag-tag crew of programmers, bringing MS-DOS, BASIC, and a fledgling PC software startup with them.”

2. E2 The origins of Bill Gates: Review of 'Source Code: My Beginnings' by Bill Gates Washington Examiner · 21 February 2025

   “Instead, it is spent almost entirely on Gates’s childhood.”

3. E3 Source Code Penguin Books (Penguin Random House UK) · 3 February 2026

   “Taking us back to his beginnings, Gates describes with candour his childhood in Seattle”

4. E4 Source Code Gates Notes (gatesnotes.com) · 31 January 2025 Own record

   “*Source Code* is the story of the early part of my life, from growing up in Seattle through the beginnings of Microsoft.”

An independent review [E1] says Source Code ends in 1979, as Gates and Allen are about to bring their young software company back to Seattle. That end point falls within the early-Microsoft window the criteria set. Penguin's description [E3] confirms the book covers his childhood in Seattle. However, a second independent review [E2] says the book is spent almost entirely on his childhood, which suggests the early-Microsoft years get less weight than childhood. The span matches the claim, but the uneven coverage makes mostly true a better fit than fully true.