A. tools B. rules C. symbols D. instructions
A. bundled software,office software B. package software,custom software C. system software,application software D. freeware software,public-domain software
A. operation system B. system software C. office software D. application software
A. word processing system B. desktop publishing system C. Smart Tags D. voice recognition and synthesis
A. from data processing to information processing B. from information processing to knowledge processing C. from data processing to knowledge processing D. A and B