Supplementary Activities 20 By Uxue M 1975 The IBM Portable PC 5100. 1981 The Osborne 1 1982 GRiD Compass 1101 1983 Gavilan SC 1984 TRS-80 model 200 1989 Macintosh Portable 1991 Macintosh Portable, smaller, light, cheaper 1999 The iBook 2025 MacBook