?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hariyanto%2C+Didik&rft.aulast=Hariyanto&rft.aufirst=Didik&rft.atitle=Z80+Simulator+for+improving+Student+Competence+in+Microprocessor+Field+of+Subject&rft.date=April+2012&rft.title=Proceeding+International+Conference+and+Call+For+Paper+(ICCP)+2012&rft.genre=article