Home Task 4: Digital Systems Task 4: digital systems Task 4: digital systems By nikkig172. Published on August 31, 2020. 0 option 3: Students explore past and present technologies. Students sequence the communication devices from the oldest to the most recent. They can research past and present technologies to understand more. Share this:TwitterFacebookLike this:Like Loading... + There are no comments Add yours Cancel replyYou must be logged in to post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.