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Terminal Operation Control System

IP.com Disclosure Number: IPCOM000077476D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 13K

Publishing Venue

IBM

Related People

Guerinet, G: AUTHOR [+2]

Abstract

This operation control system allows one or more terminals to adapt to varying conditions in a simple and flexible manner. A microprogram controls the functions of the terminal (local calculations, printing, etc.). The mode of execution of these functions can be modified in accordance with the contents of a "mask", which is entered in a protected storage area by a keyboard.

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Terminal Operation Control System

This operation control system allows one or more terminals to adapt to varying conditions in a simple and flexible manner. A microprogram controls the functions of the terminal (local calculations, printing, etc.). The mode of execution of these functions can be modified in accordance with the contents of a "mask", which is entered in a protected storage area by a keyboard.

This control system can be used, in particular, in a banking station capable of off-line operation. The banking station comprises:

1) One or more terminals, each of which includes a keyboard and a printer which can print data upon a journal tape and other documents such as passbooks;

2) A control unit including particularly: - a read-only memory in which a microprogram is stored; - a working storage in which a distinct area is assigned to each terminal; a part of this area (protected area) receives permanent data such as the "mask"; another part includes registers the length of which is defined by the mask. - an arithmetic and logic unit.

The operator initializes the protected area assigned to a terminal by keying in the following information: mask, date, terminal identification. Generally, such information will be keyed in every morning for each terminal. Because it is located in a protected area, the information can only be destroyed as a result of a power-off or a general reset condition.

When the protected area has been initialized, transactions can be recorded and handled. The operator keys in the input data (account number, former balance, amount of money involved in the transaction, etc.) into an expect area, then depresses a function key which causes the microprogram to check the data, transfer it to the proper register and print on the journal tape. The transac...