TY  - BOOK
AU  - Downton,A.C.
TI  - Computers and microprocessors: components and systems 
SN  - 027800533  (pbk) 
PY  - 1987///
CY  - Berkshire
PB  - Van Nostrand Reinhold
KW  - Electronic data processing
KW  - Computer systems
N1  - Includes index
ER  -