Count Key Data
direct access storage device (DASD) data recording format introduced in 1964 by IBM with its IBM System/360 and still being emulated on IBM mainframes
en-US/ˈkaʊnt ˈki ˈdædə/
en-GB/ˈkaʊnt ˈkiː ˈdeɪtə/
direct access storage device (DASD) data recording format introduced in 1964 by IBM with its IBM System/360 and still being emulated on IBM mainframes