It only weighs 50lbs!’ Hilarious 1970s advert for IBM’s first ‘portable’ computer shows just how far technology has come in 40 years

Weighing 50lb (23kg), and slightly larger than a typewriter, this computer isn't exactly what you would describe as lightweight. But the #IBM Model #5100, released in 1977, was marketed as one of the world's first ' #portablecomputers . A hilarious video advertising the device shows how far technology has come in the past 40 years.

http://www.dailymail.co.uk/sciencetech/article-4040282/Watch-IBM-s-hilarious-advert-1977-showing-portable-computer-weighed-50lbs.html