| Electronic
Computers | 3571 |
| Computer
Peripheral Equipment, N.E.C. | 3577 |
| Office
Machines, N.E.C. | 3579 |
| Communications
Equipment | 3669 |
| Telephone
Communications | 4813 |
| Computer,
Computer Peripheral Equipment, and Software | 5045 |
| Computer
and computer Software Stores | 5734 |
| Computer
Programming Services | 7371 |
| Prepackaged
Software | 7372 |
| Computer
Integrated Systems | 7373 |
| Computer
Processing and Data Preparation and Processing Services |
7374 |
| Information
Retrieval Services | 7375 |
| Computer
Facilities Management Services | 7376 |
| Computer
Rental and Leasing | 7377 |
| Computer
Maintenance and Repair | 7378 |
| Computer
Related Services, N.E.C. | 7379 |
| Business
Services, N.E.C. | 7389 |
| Engineering
Services | 8711 |
| Management
Services | 8741 |
| Management
Consulting Services | 8742 |
| Facilities
Support Management Services | 8744 |
| Business
Consulting Services, N.E.C. | 8748 |
| Services,
N.E.C. | 8999 |