Lockheed said it is leaving a high-tech consortium.

The decision of the aerospace and defense electronics firm means that three companies will drop out of the Microelectronics & Computer Technology Corp. in Austin, Tex., at the end of this year. Earlier this week, it was announced that Unisys and Allied-Signal also are ending their participation. MCC officials said selection of a chief executive to succeed Bobby Inman has not yet been completed.