TY  - BOOK
AU  - Downton,A.C.
TI  - Computers and microprocessors : components and systems
SN  - 0412403005
U1  - QA/76.5 
PY  - 1992///
CY  - New York
PB  - Van Nostrand Reinhold Co.
KW  - Electronic digital computers.
KW  - Microprocessors.
ER  -