Since the 1960s, there have been five major generations, or cycles, of computing. Which represents those generations in order?
a. mainframes, miniframes, PCs, desktop Internet computing, mobile computing
b. minicomputers, servers, PCs, wired computing, wireless computing
c. mainframes, supercomputers, PCs, mobile computing, Internet computing
d. PCs, laptops, netbooks, mobiles, embedded processors
