PDP-8/I

PDP-8/I computer was introduced in 1968 as the sucessor to the original PDP-8 and was the first to be made with IC's. It was made of the new M series simple module boards similar in function to the R series ones used in earlier machines except now made with IC's and somewhat more logic on each card. This machine required an expense wirewrap backplane to connect all the cards so later machines likes the PDP-8/E started using larger cards with a common bus to reduce the interconnect.