The term PC Brand refers to the four major computer brands: AMIGA (5 letters), ACER (4 letters), DELL (4 letters), and MAC (3 letters). AMIGA is a brand of personal computers that was popular in the 1980s and 1990s. ACER is a Taiwanese multinational hardware and electronics corporation that produces laptops, desktops, tablets, and other computer-related products. DELL is an American multinational computer technology company that develops, sells, repairs, and supports computers and related products. Finally, MAC is a brand of personal computers designed, developed, and marketed by Apple Inc.