While the Osborne 1
claims to be the word's first self-contained portable personal computer, the Radio Shack TRS-80 Model 4P can lay claim to being one of the next generation of portable computers. Eerily similar to the Osborne 1, the Model 4P made major strides in construction and usability. This TechRepublic Cracking Open Photo Gallery
reveals how the TRS-80 Model 4P improved upon the initial luggable design to takes its place in the history of portable personal computers.