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

a) Mainframes, miniframes, PCs, desktop Internet computing, mobile computing

Explanation: The hierarchy of the computers or computing are in the generation is:-

Mainframe:-designed for the execution of huge data processing , storage and execution.Miniframe:-has similar functioning as the mainframe but on smaller scale and version.Personal computer(PC):-It is designed for the individual purpose and according the need of the user.Mobile computing:-computing that can be done on the mobile phone similar to the computing on the personal computerInternet computing:-the computing of the mobile and computer system with the facility of the internet connectivity.