TY  - BOOK
AU  - NORTONS,PETER
TI  - introduction to computers / 
SN  - 0078210585
U1  - 004 
PY  - 2000///.
CY  - Washington، 
PB  - glencoe mcgraw-hill : 
KW  - computers.
KW  - electronic data processiry.
ER  -