Family == Computer

My family is a computer.
My father, the main processing unit.
It is his job to keep things running.
My mother, a diskette,
giving, giving, giving all she can.
My sister, the stunning video graphics card,
distributes beautifully and timely processed information.
My brother, the modem within.
He keeps the computer up to date.
And finally, I the heatsink,
keeping everything cool.