Home Task 4: Digital Systems Task 4 Digital Systems: Past and Present Technologies By marsha kosmeier. Published on April 3, 2019. April 4, 2019 0 https://www.youtube.com/watch?v=DENG7Q7VRgo 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.