books, instruction manuals, workbooks, flashcards, journals, and photographs all in the field of computers

'book':1 'comput':14 'field':12 'flashcard':5 'instruct':2 'journal':6 'manual':3 'photograph':8 'workbook':4

computer software for maintaining computer and data security, detection and prevention of viruses, prevention of access by unauthorized users, and the encryption of diskettes

'access':16 'comput':1,5 'data':7 'detect':9 'diskett':24 'encrypt':22 'maintain':4 'prevent':11,14 'secur':8 'softwar':2 'unauthor':18 'user':19 'virus':13

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