| Integration | Technology | Typical number of devices | Typical function |
| Wafer Scale Integration | CMOS | > 5.000.000 | DSP & special purposes |
| Very-large-scale integration | CMOS (mostly) | 10.000 - 5.000.000 | Processors |
| Large-Scale Integration | Bipolar & MOS | 100-10.000 | ROM & RAM |
| Medium-Scale Integration | Bipolar & MOS | 50-100 | Adders & counters |
| Small-Scale Integration | Bipolar | 10-20 | Gates and flip-flops |