Title: Operator prompting system

Abstract: In a data processing system wherein operator entry of data is provided an array of alpha numeric display units is utilized not only for indicating operand entries and operating results, but also as an operator message prompting medium for steering the operator to correct operand entry or system errors. Upon processor recognition of a particular entry or other errors an assigned error signal is generated which blocks the operand or operation result signal from the display units. In one embodiment the error signal is received at a programable logic array associated with each display unit to provide a signal for accessing a memory which in turn provides the appropriate letter pattern signal for the display unit to spell out an error prompt message. An alternate embodiment provides for serial generation of the letter pattern signals for each display unit and rapid sequential actuation of the display units to spell the prompt message.

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Inventors: Dlugos, Daniel F. (Huntington, CT, US)

Application Number: 806747
Filing Date: 1977-06-15
Publication_date: 1979-01-23
Assignee: Pitney-Bowes, Inc. (Stamford, CT)
Primary Class(es): 714/46 177/25.15, 700/84, 705/407, 705/411
Other Classes:
US Patent Ref:

3315067	Apr, 1967	Bell et al.	177/25.
3474438	Oct, 1969	Lauher	340/324.
3839630	Oct, 1974	Olande, Jr. et al.	235/156.
3906208	Sep, 1975	Rogers	177/25.
3976975	Aug, 1976	Cochran	35/9.
4004139	Jan, 1977	Hall	177/25.
4051913	Oct, 1977	Gudea	177/25.
4055748	Oct, 1977	Boshinski et al.	177/25.

Other Refs:
Primary Examiner: Atkinson, Charles E.
Assistant Examiner:
Attorney: Vrahotes; Peter, Soltow, Jr.; William D., Scribner; Albert W.