Texas Computer Associates have been the anchor in the Southern Texas area for Networking, Computer and Telephony Systems sales and service for over 25 years. TCA is a name you know that will be here for the next 25 years standing strong, against all elements and technology advances. With a staff's combined experience reaching well over 100 years in the IT and Telephony markets, we will keep you running with as close to 100% uptime as possible.