Sup activiti 20 By Izadi.Oribe 21 MacBook 1974 Gavilan sc 1975 The IBM portable PC 5100 1981 The Osborne 1 1982 Grid compass 1101 1984 Trs-80 model 200 1989 Machintosh Portable 1991 Machintosh Portable smaller, light cheaper 1999 The IBOOK