h <<-->> hammerHamming code <<-->> Harvard Mark II MachineHarvest <<-->> head-strictheader <<-->> hexadecimalhexidecimal <<-->> HINTHiPAC <<-->> homogeneoushomogenous <<-->> HPHP VEE <<-->> Hubnethubs <<-->> HyperTalkhypertext <<-->> HyTime