| A | B |
| Binary | a language of 1's and 0's that computers can understand |
| Central Processing Unit | handles most of the work that goes on inside the computer; crunches numbers and tells all other parts what to do |
| Megahertz | how many million times per second the computer can process instructions |
| ROM | read-only memory; it holds onto the information the computer needs permanently |
| RAM | random-access memory; more temporary storage |
| Hard Drive | a box that contains several magnetic disks where all info on the computer is stored in the form of bits |
| Circuit Board | ties everything together; like keyboards, scanners and printers |
| Buses | electrical pathways that link internal things in the computer |
| Sound Card | have analog digital converters that can change bits into sound signals, then back again |
| Operating System | all of the virtual files and folers and buttons that allow you to interact with the computer |
| Modem | lets your computer talk to other computers |