✔ 最佳答案
ROM /RAM Drive, depends on the hardware you purchased
microprocessor = CPU
AGP, ISA and PCI are the type of the PC card
ISA are retired long time ago, (the bigger size than the others cause it is old, and many motherbroad nowsday do not have this slot anymore)
AGP usually use for video card(graphic card),
PCI are quite common, can use for LANcard, modem, usb extension ....
a new PCI version is called PCI-E, it provide better preformance for the graphic card