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PC
a General Purpose computer -
Apple
Apple Inc. is an American multinational corporation that designs, develops, and sells consumer electronics, computer software and personal computers. -
Macintosh
a line of personal computers (PCs) designed, developed, and marketed by Apple Inc. -
First Electroninc Spreadsheet
an interactive computer application program for organization and analysis of data in tabular form. -
UNIX
UNIX is a multi- tasking and multi- user computer operating system that was originally meant to be used for developing software that is to be run on multiple platforms. -
Windows
Microsoft Windows is a series of graphical interface operating systems developed, marketed, and sold by Microsoft. -
CRAY-1
The Cray-1 was a supercomputer designed, manufactured and marketed by Cray Research