Operating system for an electronic franking machine
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United States of America Patent
Stats
-
May 22, 1990
Grant Date -
N/A
app pub date -
Feb 29, 1988
filing date -
Feb 27, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The machine comprises a 16-key keyboard (1), an alpha-numeric display (2), a calendar clock (3), a microprocessor (4), a program memory (5), a text memory (6), and a working memory (7), interconnected by a bus (B). A first set of messages enables normal franking operations to be performed, and a second set of messages which are accessible by means of a menu key (M) on the keyboard enable special operations to be performed. The messages are stored in the text memory, with each message being constituted by screens each of which has the same capacity as the display. Each screen is transferred from the text memory to the working memory prior to being displayed. Each message is controlled by the microprocessor which runs a program relating to each message. All of the programs are stored in the program memory.
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