ALT The opening page of Chapter 1 of The Developer's Guide to AI, titled "Understanding Large Language Models," on a yellow background. A large numeral 1 sits above the chapter title, with a small circular illustration of a robot beside introductory text explaining that LLMs are deep learning models pretrained on vast amounts of data. The facing page is partly visible at right, showing the edge of a figure and a table.

ALT A page from Chapter 1 of The Developer's Guide to AI on a yellow background. It includes Figure 1-1, a diagram showing data sources (web pages, books, articles, research papers, and code) feeding into LLM training with a September 30, 2024 cutoff date, and Table 1-1, listing the training data size and sources for BERT, GPT-3, and LLaMA. A shaded sidebar titled "The BERT Breakthrough" explains how BERT advanced natural language processing.

ALT A two-page spread from Electronics for Kids, Second Edition opened to Project #2, "Build Your Own Secret Intruder Alarm." The left page shows a diagram of a buzzer wired to a 9-volt battery in closed-circuit ("ON") and open-circuit ("OFF") states, with text explaining how flipping a switch starts and stops the sound.

ALT The right page of the Project #2 spread in Electronics for Kids, Second Edition, describing how to turn a door into a switch using aluminum foil and wires so a buzzer sounds when the door opens. A shopping list and the start of "Step 1: Prepare the foil" are visible.