TY  - BOOK
TI  - Input/output
T2  - Understanding computers
SN  - 0809456672
U1  - 621.38195 
PY  - 1986///
CY  - Virginia
PB  - Time-Life Books
KW  - Computers
KW  - Electronic data processing
N1  - Includes index; Bibliography: p.123-125
ER  -