About AUCD . UCEDD, LEND, and DDRC . 67 University Centers of Excellence on Developmental Disabilities (UCEDD)38 Leadership Education in Neurodevelopmental and Related Disabilities (LEND) 21 Developmental Disabilities Research Centers (DDRC). What is Assistive Technology?. Basically, AT is anything we find helpful in our daily life. It can be a tool or an alternative method of performing a task..