| A | B |
|---|
| Electronics | Study of behavior and control of electrons in devices |
| Vacuum tube | Airless tube that produces 1-way flow of electrons |
| Diode | Controls flow of electrons |
| Triode | Amplifier responsible for growth of Radio and TV |
| Semiconductor | Material that conducts better than insulators but not as well as true conductors |
| Rectifier | Converts alternating current to direct current |
| Transistor | Amplifier using layered semiconductors |
| Cathode-Ray Tube | Produces image on screen using electrons |
| Hardware | Physical computer parts |
| CPU | Brain of computer |
| Input device | Device that feeds data to a computer |
| Disk drive | Input/Output device that uses disks to exchange information |
| Output device | Device that removes information from computer |
| Modem | Input/Output device that converts computer signals to phone signals |
| Software | Programs, instructions for computer |
| Binary system | Number system using 1's and 0's |
| Bit | Single piece of computer data |
| Byte | String of 8 bits |
| Receiver | Telephone device that converts current to sound waves |
| Transmitter | Telephone device that converts sound waves to current |
