Do both LINK 480Z and CARDboard Illustrative Aid to Computation both involve computers?
CARDboard Illustrative Aid to Computation CARDIAC (CARDboard Illustrative Aid to Computation) is a learning aid developed by David Hagelbarger and Saul Fingerman for Bell Telephone Laboratories in 1968 to teach high school students how computers work. The kit consists of an instruction manual and a die-cut cardboard "computer".
Expensive Desk Calculator Expensive Desk Calculator by Robert A. Wagner is thought to be computing's first interactive calculation program.