Digital Federal Credit Union | 14,549 followers on LinkedIn. What will DCU mean to you? | Digital Federal Credit Union and First Technology Federal Credit Union have merged to form a single credit union named First Technology Federal Credit Union. As we work to combine operations, we are operating as two divisions named: Digital Federal Credit Union (DCU) and First Tech Federal Credit Union (First Tech). DCU – Digital Federal Credit Union – is a top-20 credit union with more than one million members residing in all 50 states, and over $10 Billion in assets, headquartered in Marlborough, Massachusetts.