HELP!!!!!

Hey,

I am new here, and i am not so good whif computers. Does somebody want to tell me what EMULGATORS are?
thanks

Emulator refers to the ability of a program or device to imitate another program or device. Many printers, for example, are designed to emulate Hewlett-Packard LaserJet printers because so much software is written for HP printers. By emulating an HP printer, a printer can work with any software written for a real HP printer. Emulation tricks the software into believing that a device is really some other device.

SO, if I install a emulgator of a nintendo 64, than I can play the ninteno64 on my computer?