1. input- keyboard,mouse,scanner,webcan,joystick,graphic
2. procesor - intel,IMB,AMD
3. output devies - speaker, headphones, scren, printer
4. storage devies - hard disk (SATA,IDE, pendrive, cd rom, blue ray dvd,

rujukan
www.geekstogo.com/forum/Best-Scanner-t193565.html
http://en.wikipedia.org/wiki/Solid_state_drives
http://en.wikipedia.org/wiki/Storage
http://en.wikipedia.org/wiki/webcan
http://en.wikipedia.org/wiki/mouse
http://en.wikipedia.org/w/index.php?title=Special%3ASearch&redirs=1&search=input+devies&fulltext=Search&ns0=1
http://en.wikipedia.org/wiki/IMB
http://en.wikipedia.org/wiki/AMD
http://en.wikipedia.org/wiki/Blue_ray
http://en.wikipedia.org/wiki/Output_device
http://en.wikipedia.org/wiki/Computer_data_storage
http://en.wikipedia.org/wiki/Hard_disk_drive
http://en.wikipedia.org/wiki/Hd_dvd
http://en.wikipedia.org/wiki/Opteron
http://en.wikipedia.org/wiki/Processor
http://en.wikipedia.org/wiki/Serial_ATA
http://www.laubach-on.ca/keyboard_types.htm