Designed by IBM for training in the development of computer technology, consisting of a carrying case, with legend "Computertechnologie IBM", containing two plastic trays: the first displaying computer com-ponents (circuit boards, chips, wafers, quartz, silicon etc.), the second containing four instructional manuals, a VHS tape and a 30x microscope, overall 21 x 19 ½ in. The manuals include textbooks and slides, two of which are water damaged. The magnifying glass would allow viewers to see details of the chips and wafers included in the first display tray. A very rare and comprehensive teaching material.品相: (3/–)