Hur tunga var datorerna i

* UNIVAC I (1951):16 500 pund (7 484 kg)

* IBM 704 (1954):11 000 pund (4 990 kg)

* IBM 7090 (1959):22 000 pund (9 980 kg)

Minidatorer (1960-1980-tal)

* DEC PDP-8 (1965):250 pund (113 kg)

* Wang 2200 (1973):50 pund (23 kg)

Personliga datorer (1970-talet-nutid)

* Altair 8800 (1975):12 pund (5,4 kg)

* TRS-80 Model I (1977):24 pund (11 kg)

* Apple II (1977):13 pund (5,9 kg)

* IBM PC (1981):28 pund (12,7 kg)

Moderne bärbara datorer (2000-talet-nutid)

* Apple MacBook Air (2008):3 pund (1,36 kg)

* Lenovo ThinkPad X1 Carbon (2012):2,5 pund (1,13 kg)

* Dell XPS 13 (2015):2,7 pund (1,23 kg)