Now 'A' is inches from the action.
A tiny crane (the ) finds the byte and copies it. It doesn’t go directly to the CPU, though. First, it travels to the RAM (Random Access Memory) —the city’s desktop. RAM is fast, but forgetful; when the power goes out, it loses everything. Here, 'A' sits on a green silicon table, ready to work. Computer Architecture
But here’s the secret of computer architecture: The CPU could have added 1 to 'A' in one billionth of a second. But waiting for the Hard Disk? That took 10 million times longer. That’s why architects build pipelines (doing multiple steps at once), multiple cores (factories working in parallel), and branch predictors (guessing which way the instruction will jump next). Now 'A' is inches from the action