SENTRY

OPTICAL MARK READING COMPUTER SYSTEM, COMPRISING AN OPTICAL SCANNER, DOCUMENT TRANSPORTERS, DISPLAY AND CONTROL TERMINALS, A COMPUTER PROCESSOR UNIT, COMPUTER MEMORY UNITS, COMPUTER PROGRAMS AND PRINTERS SOLD IN VARIOUS COMBINATIONS AS A UNIT, AND REPLACEMENT PARTS AND STRUCTURAL COMPONENTS THEREFOR FOR SUCH USES AS GRADE REPORTING, SCORING ANSWER SHEETS, COURSE SELECTION, SURVEYS ORDER ENTRY AND ATTENDANCE REPORTING