Look for books with call numbers that begin with these Library of Congress subsections:
Subclass QA
QA71-90
Instruments and machines
QA75-76.95
Calculating machines
QA75.5-76.95
Electronic computers. Computer science
QA76.75-76.765
Computer software
Ethics and Technology by 
Foundations of Modern Networking by 
Cisco CCNA Networking for Beginners: the Ultimate Beginners Crash Course to Learn Cisco Quickly and Easily by 
Cisco Networking Essentials by © 2021 Dallas College
