Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Separate the instructions a computer follows from the information those instructions use or change. You’ll meet the stored-program idea: programs and data both live in memory, but they play different roles.

Use what you learned in the previous lesson to solve real-world problems.

Break a broad command into the small kinds of actions a processor can perform, such as reading, copying, comparing, storing, and sending output. You’ll recognize that “smart” behavior comes from many tiny exact steps.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Trace the CPU as it fetches an instruction, decodes what it means, runs it, and moves to the next one. You’ll use the program counter as the clue for which instruction happens next.

Use what you learned in the previous lesson to solve real-world problems.

Treat RAM as the computer’s temporary workspace, where locations hold current values while a program runs. You’ll connect friendly names like score or message to stored values that can be read or replaced.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Use a small trace table to record how values change after each instruction. You’ll see why the same steps in a different order can produce a different result.

Use what you learned in the previous lesson to solve real-world problems.

Follow a yes/no test that sends the computer down one path or another. You’ll reason through conditions like “if the password matches” without needing a full programming language.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Trace repetition as a jump back to an earlier instruction until a stopping test becomes true. You’ll see how a computer repeats work without deciding anything beyond the exact rule it was given.

Use what you learned in the previous lesson to solve real-world problems.

Connect human-readable source code to the machine instructions a CPU can run. You’ll compare a compiler, which translates ahead of time, with an interpreter, which runs code step by step.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Follow what the operating system does when a program starts: loading it into memory, giving it CPU time, and handling access to input and output devices. You’ll see why programs usually do not control the whole machine directly.

Use what you learned in the previous lesson to solve real-world problems.

Trace an interactive program that waits for a click, keypress, tap, or message before running the next piece of code. You’ll recognize event-driven behavior in apps, games, and web pages.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Sort common failures into mistakes the computer can’t read, actions that crash while running, and instructions that run but produce the wrong result. You’ll link each bug type to the computer’s literal rule-following.

Use what you learned in the previous lesson to solve real-world problems.

Predict when the same program will or will not produce the same output. You’ll account for inputs, saved state, the clock, randomness, and outside messages as things that can change what happens.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Review this chapter with practice based on your mistakes.