| Acronym | Meaning |
 | CC | Carbon Copy |
| SIMM | Single In-Line Memory Module |
| HTTP | HyperText Transfer Protocol |
| GUI | Graphical User Interface |
| OCR | Optical Character Recognition |
| SD | Secure Digital |
| ISDN | Integrated Services Digital Network |
| RAM | Random Access Memory |
| MIDI | Musical Instrument Digital Interface |
| UPS | Uninterruptible Power Supply |
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