This really depends on what you mean by "computer". Probably the earliest design for a programmable computer was by Charles Babbage in 1835. The earliest electronic computers were developed during World War II (around 1943) to decode German messages. The earliest personal computer - designed to be used by one person - was the PDP-8 was first released in 1965.
The first computer which contains most of the components of a modern personal computer was the Xerox Alto, developed in 1973 - it had a windowed, mouse driven, WYSIWYG operating system as well as a laser printer.
Electronic computers, since ww2. Human computers, almost forever.
As long as they have been around, although with different groups depending largely on price.
2006, My cousin asked me how long it has been around so I searched it... One said 2008 and another said 1887, I could not believe 1887 because there were not even computers in 1887..
The time football has been around for is a long timeFootball has been around for a long time but we do not know how long it has been around
It has been around for as long as technology has been around.
Physics. Technology, well what I think of it, e.g. computers, DVDs etc, has only been around for about 30 or so years, while physics has been around literally for ever. Technically, computers have been around since the 1940s (very large computers).
Euthanasia has been around for as long as people have been around.
since computers were invented
how long have boxing been around?
how long has deforestation been around
how long have piigs been around
how long has rabbits been around for