DEC :
A powerful new Alpha 64 bit RISC computer chip was introduced in the year 1977, as new VAX (Virtual Address Extension) Computer. The VAX was 32 bit computer line based on operating system, called VMS. This new computer system was more powerful and had better time-sharing capabilities than past DEC systems DEC net networking technology-enabled customers to attach different types of DEC computers together from small workstations to large corporate servers.
As the 80s drew to a close DECs were not IBM compatible and were designed as a way for users to attach to DEC server systems rather than stand-alone products. And DEC manufactured all the components for its PCs, resulting in systems that were much more costly than other PC vendors.
From 1984 to 1988 DEC developing its own RISC chip, the PRISM. By using these chips, DEC introduced a UNIX workstation running on its own UNIX, Ultrix
The RISC chips are to be utilized in these new VAXes was a new 64 Bit chip, designed by DEC, code-named the Alpha.