YOU check a computers history by going into my computer and access hardware info. This should give you info that is needed.
information about history of computers information about history of computers
short history of mainframe
now
There's a number of computers, check around!
Hands on History - 2001 Computers was released on: USA: 17 November 2001
they use computers to keep check of what they sell
You don't HAVE to, but if you are planning on working in the computer field and want to avoid some of the mistakes made in the field in the past you might want to consider it. Also it can be interesting.
Wikipedia is a great website that offers a ton of information on the history of personal computers. There are many other websites that include information about personal computers also.
Go check it out.
Electro-Mechanical Computers were used before first generation of computers.
starting from hands to pc.
You can check your computers memory by going into the BIOS menu.