Which one of these features was available on the 1982 Epson HX-20 notebook computer?
And now, for some context Regarded as being one of the earliest portable computers and perhaps the first “notebook” PC, the Epson HX-20 was announced in November 1981 for a starting price of $795 with all of the features listed above, which is remarkable when you consider that a microcassette drive at the time could have easily cost more than $100. Its 120x32 LCD was driven by six PD7227 controller ICs drawing 40x16 pixels each and the system used a proprietary operating system consisting of the EPSON BASIC interpreter and a monitor program....