6 Flashcards
Video services are classified into —- categories?
two
graphic mode service
text mode service
A location in video memory corresponds to a —- on screen.
dot
The video memory holds the—?
ASCII of the character to be shown, and the actual shape is read from a font definition.
ASCII stands for?
American standard code of information interchange
The dos input buffer has special format where the first byte stores —— and second byter stores —-?
the maximum character buffer,
the number of characters actually read on return
A floppy disk is a —– with a fine coating of —- over it.
circular plate, magnetic material
If the head is —– and the motor —–. The area of the disk surface forms a cirlce called —.
fixed, rotates. track
Standard floppy disk has —– tracks, and —– sectors per track with —- head.
80, 18 , two.
INT 13 extensions that take linear —- sectors number and handle the head, track, sector conversion themselves.
64 bit
The —– holds the master boot record and a partition table towards end.
physical sector 0