Browse Prior Art Database

Activity Graph Display Monitor

IP.com Disclosure Number: IPCOM000088285D
Original Publication Date: 1977-May-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Hennet, PP: AUTHOR

Abstract

A hardware monitor is described that provides a variable depth graph display of a computer system parameter or measurement point. The circuits in the monitor are illustrated in Fig. 1.

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Activity Graph Display Monitor

A hardware monitor is described that provides a variable depth graph display of a computer system parameter or measurement point. The circuits in the monitor are illustrated in Fig. 1.

By monitoring an activity point or combination of points via measurement probe(s) and inputting this monitored data into the device, a visual graph of the activity can be continuously displayed on a LED (light-emitting diode) array illustrated in Fig. 2 in the manner shown in Fig. 3.

Input probe 10 feeds a counter/timer unit 11 which provides an output pulse on line 11A at a predetermined selectable increment, as follows:

The output pulse on line 11A provides an input into the serial-in and parallel- out shift register 13. The number of positions in this shift register determines the quantity (Q) value to be displayed (vertical position). Latch arrangement 14 is used to provide a double display at the top of the array field (Fig. 2) to indicate when the upper quantity limit has been exceeded. At a selectable time interval, this quantity is transferred to shift register group 15 to control display of the quantity on the LED array (Fig. 2). The quantity (Qn) is initially placed on the latest (rightmost) time column and is stepped across the array by stepping the control shift registers 15. Since the latest value is entered every time registers 15 are stepped, activity of the measured point is shown across the LED array (Fig. 3).

Display time is availabl...