| Business | Phone |
| Actel Corp 201 Shannon Oaks Cir # 200, Cary 27511 | (919) 654-4529 |
| Applied Micro Circuits Corp 14001 Weston Pkwy # 100, Cary 27513 | (919) 678-4552 |
| Tri Quint Semiconductor Inc 1135 Kildaire Farm Rd, Cary 27511 | (919) 380-0805 |
| Texas Instruments Inc 111 Corning Rd, Cary 27511 | (919) 233-1174 |
| Texas Instruments Inc 7001 Weston Pkwy, Cary 27513 | (919) 677-7000 |
| Silicon Integrated Systems 539 Keisler Dr # 204, Cary 27511 | (919) 852-0655 |
| Philips Semiconductors 1001 Winstead Dr # 520, Cary 27513 | (919) 677-7900 |
| Nec Electronics Inc 2000 Regency Pkwy # 455, Cary 27511 | (919) 460-1890 |
| Linear Technology Corp 15100 Weston Pkwy # 202, Cary 27513 | (919) 677-9412 |