| 摘要 |
<p>PURPOSE:To prevent mis-input, by detecting the presence of two or more signals on the lines of row and column direction, in the tablet unit. CONSTITUTION:The signal on the line is latched to F.F31 to 33 and 41 to 43 by connecting the line of row direction of l1 to l3 and the line of column direction of C1 to C3 to the flip flops 31 to 33 and 41 to 43 via the sense amplifiers 11 to 13 and 21 to 23. The signal latched is checked for the presence of one or more signals with the OR circuits 5 and 6 and also checked two or more F.F31 to 33,41 to 43 of the same direction with the inspection circuits 7 and 8. When the inspection circuits 7 and 8 detect failure, alarming is made and it is informed to the operator.</p> |
