Browse Prior Art Database

Error Detection and Location

IP.com Disclosure Number: IPCOM000098921D
Original Publication Date: 1958-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Higby, LC: AUTHOR

Abstract

The system provides a check of the operation of a computer to detect and locate computer errors.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Error Detection and Location

The system provides a check of the operation of a computer to detect and locate computer errors.

Within memory 10 there are included a set of instructions to cause a complete checking operation and answer data for determining the accuracy of each check. An inquiry instruction may be sent to the instruction register 11. The instruction received is read out through the switching circuit 15 to a compare circuit 16. The answer data from memory 10 are supplied to a check register 17, which is connected to compare circuit 16. If the two inputs to the compare circuit are not in agreement, an indication is given on display 18.

Thereafter, the instruction in register 11 causes a sequence of operations to be performed in units 12, 13 and 14. The outputs of units 12, 13 and 14 are successively applied through switching circuit 15 to the compare circuit 16. Successive answer data from memory 10 are applied to check register 17 for the comparison operation. Thus, a separate check is made on the operation of each unit.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]